it says colusa county sheriff's office, colusa, california, no street address and in the upper left-handcase and then there are eight stamps on it. it was pretty light. it was way too much postage. >> reporter: because inside was just a single sheet of paper. an open letter to the cops. what did that letter say? >> reporter: basically it was claiming responsibility for the bombing. >> the letter full of misspellings and bad grammar had been written on a label maker then photo copied. its author claimed to be a military trained contract killer had been hired to kill roberto over a mexico deal gone wrong and that it was ms 13 behind it. >> reporter: what the heck is ms 13? >> it's a violent el salvadorian criminal street gang. >> reporter: and that roberto was supposed to be a target of this group? >> the letter implied roberto had messed with a drug cartel and that ms 13 had been contracted. >> the author of the letter taunted the detectives writing the lab results would find military grade powder but no dna which was true so far. the point of the letter wrote its author was a warning. ro

it wasn't until thursday he was found at another location in colusa and that's where he was arrested." before leaving the courthouse in colusa, ehrke was ordered to be held without bond and given a public defender.in colusa county, kevin oliver (jur) pleasanton police are searching for the man they say robbed a bank this morning. it happened around ten at the chase bank in the stoneridge shopping center. police say the man walked into the bank and handed the teller a note demanding money. authorities say the teller handed the man cash. this is a picture of the man, taken from surveillance video. authorities say he left the shopping center in a silver toyota camry. police say he is between 50 and 60 years old, standing around six foot three and weighing about 200 pounds. (justine) in the north bay... a mother and son are behind bars tonight for allegedly running a prostitution ring. kron's 4 camila bernal explains how authorities discovered this case. over the last couple of weeks, the rohnert park department of public safety has been focusing on human trafficking. their latest underco

. >>> one man is under arrest after two bodies were found on a proper and colusa county. >> detectives were called to the town of arbuckle, 50 miles northwest of sacramento. they discovered one woman in a freezer and another in a pond. >> reporter: acres of almond trees surrounding a dirt road. a single piece of crime scene tape tied to a fence. that's as much as we can show you of 66 and anne hill gayton road and arbuckle. the woman who owns the land would not let us any closer as detectives investigated double murder. her son, martin park he was charged with both killings. 4:00 thursday night, one woman was found dead in a freezer. by nightfall, another woman was found dead in a pond. >> they were currently known to be here at this residence. >> reporter: the colusa county sheriffs department has not reached those women's families to explain the unimaginable fates they met. to explain they are still trying to figure out why. they do said they were not relatives >> it hits hard. we are a small community. >> reporter: in a small farming community of about 3500, no one can escape a trag

new at six: a disturbing murder investigation of two women at a hidden home in colusa county. this is video of the home where investigators say the suspect >>> a disturbing murder investigation of two women at a hidden home. this is video of the home where investigators say the suspect lived with the women and a group of others about 50 miles north of sacramento in arbuckle. investigators responded to the home on thursday to reports of suspicious activity and that's when they found the body of a 39-year-old woman in a bedroom freezer. the dive team was called to search a pond on the property and found the other 25-year-old victim, the suspect is being held without bail in jail. >>> serious questions remain after long-time michigan state university doctor larry nassar was sent to prison. now the state's attorney general says he's going to get to the bottom of how nassar was able to victimize so many young women in his care. a full investigation has been launched with a special prosecute or to lead it. >> my department in this investigation will find out who knew what and when,

kron4news (steve) this afternoon, martin ehrke (irk-ee) was arraigned on two counts of murder in colusay and assigned a public defender.(vikki) prosecutors say the 49-year old is responsible for killing two women whose bodies were discovered on his father's property. the property is about 50 miles northwest of sacramento. detectives were called to investigate the area and found the body of 39-year old kimberly lynn taylor in a freezer. the body of 25-year-old jessica lynn mayzak was later discovered in a pond. ehrke is expected to enter a plea next month. (steve) today -- usa gymnastics confirmed that all members of its board of directors will resign in the wake of the larry nassar sex abuse scandal. the u.s. olympic committee requested the move. a handful of board members had already stepped down, but the usoc demanded the entire board be replaced. the usoc is also asking for much tighter reporting from the organization, as well as requiring staff and board members to complete safety and ethics courses over the next six months. the house energy and commerce committee is investigating t

. >>> in colusa county a man was arraigned on murder charges today after the bodies of two women were discovered on his parent's property. he didn't enter a plea. detectives were called yesterday morning to the property in the town of arbuckle about 50 miles northwest of sacramento. investigators say one woman's body was found inside a freezer in the home. the second woman's body was found in a pond on the same property. people in the town were shocked! >> everybody here knows everybody. you know, it's close-knit. it's terrible what happened. and people are in shock. can't believe it. >> the victims are 39-year-old kimberly lynn taylor and 25- year-old jessica lynn mazick. they lived on the property. where they were found. >>> a union city man whose blind was approaching this intersection as he does normally looking for the button to cross the street on this pole. but it's missing! and no one told him that it was moved over here. why is that? and what's going on? i'll tell you coming up. >>> and the price tag to fix the oroville dam on on the rise. why it's now more than half a billio

. >>> colusa county a man was arraigned on murder charges after the bodies of two women were discovered. yesterday morning detectives were called to ar buckle about 50 miles northwest of sacramento. the sheriff's department today released a mugshot of the suspects in the case martin irky. a woman's body was found in a freezer in an arbuckle home owned by his parents. a second body was found in a pond on the same property. the victims are identified as 38 kimberly taylor and 25-year- old jessica mazak. law enforcement said the two women lived on the property where they were found. >>> the preliminary hearing of the accused killers of a teenager from richmond starts on monday. the he could martinez was shot near his home. paul chambers reports. the family begins their fight for justice for their son. >>> reporter: surrounded by family and friends, the parents of nico martinez, jr., came together to remember a young man gone too soon. >> this is a neighborhood so for him to have been murdered like i said walking home, it hurts. >> reporter: the family is prepared to live that pain all over