his name is larry henson. police tell us he sped off during a traffic stop last night hitting an officer then crashing into other cars here along branch avenue before driving off. 61-year-old charlie viveret of clinton was in one of the other cars and died. we're told the car henson was driving had been reported stolen. >>> a former fbi agent who worked on several high-profile drug cases in our area is now facing more than 60 charges and among the accusations that he stole and used heroin that was seized during his own investigations. in the process he botched dozens of cases in several states. federal prosecutors filed papers today charging matthew lowery with 64 counts. that includes evidence tampering and drug to pegs. he could plead guilty to these charges as soon as next week. news4's mark segraves is combing through charges. >>> disturbing and unacceptable. that's how the chief is describing allegations against a prince george's county police officer. santiago is accused of holding a gun to a man's head.

the driver, larry henson, had an unregistered late and abruptly spat all. >> -- and he spat all. >> he struck the officer. richard: officers pursued him for about a half mile in what turned out to be a stolen suv stopping in the intersection, but the suspect cap going before smashing into the car, leaving him fatally injured. >> i was shocked. it's just something i cannot even imagine. richard: just so much sadness in that neighborhood. henson was already on probation for an armed carjacking charge. he faces assault and theft charges, and that family is in mourning tonight. richard reeve, abc 7 news. leon: just into the newsroom, a suspicious substance found in the white house letter was nothing but -- a test came back possibly positive for cyanide. tonight, a final test on the substance says it was saliva. it came from a heavy smoker, which makes sense because it contains small amounts of cyanide. it is not clear the sender will be facing charges. winter weather is on its way out , finally going to feel like spring this weekend. hopefully. steve rudin has the word on how warm it will

police say 22-year-old larry henson crashed a car into charlie vivaret's mercedes. a police officer was trying to pull him over when he tried to speed off. >> through his flagrant disregard for the safety of the public mr. hinson led us to a place where we have lost a life. >> reporter: after the crash he ran from the scene. police caught him around 30 minutes later. >> a prince georges county police officer accused of threatening a man by holding a gun to his head. that officer will go to trial. officer santiago has been indicted on assault charges accused of threatening a man during a parking lot dispute outside a home last year in buoy. at onen point he said we shoot people. police keef called the allegations disturbing. officer santiago has been with the department for three years. he's suspend ped without pay. >> two women told fairfax county police they were lured to a burke home with the promise of a job but they were drugged instead. the women are in the u.s. from mongolia. they were looking for work in arlingtonment they say another mongolian woman approach

prince georges county police say -- >> the 22-year-old larry henson crashed into a stolen car and this yesterday. a mercedes crashed into that on branch avenue and temple hills. police officers were trying to pull him over when he tried to speed off. nson through his december regard for the safety of the public led us to a place where we have lost a life. >> after that he ran from the scene. police caught him 30 minutes later. a prince georges police officer accused of threatening a man by holding a gun to his head will go to trial. the officer has been indicted on assault charged and has been accused of threatening a man during a tae hwan parking dispute last year. prosecutors say sant i can't go told him we are pgpd we shoot people. police call the allegations disturbing. he's been with the department three years. he's suspended without pay. >> they were lured to a home by the promise of a job but they were drugged instead. the women were in the u.s. from mongolia. they were looking for work at boston common mall in arlington. another mongolian woman approached them and offer aed wor

police say 22-year-old larry henson of southeast was behind the wheel of that stolen car that injured a police officer and took the life of an innocent 61-year-old driver in temple hills. >> again, mr. henson through his flagrant disregard for the safety of the public has led us to a place where we've lost a life. >> reporter: police say that driver was charles viveret. he was a program management for defense logistic agency based in ft. belvoir. he also was in the military. this all started with what appeared to be a routine traffic stop were driving out headlights but quickly escalated when the driver took off, striking and injuring one officer and two additional officers who tried to catch up to the fleeing car. police say there was a brief pursuit at about half a mile later. henson crashed into multiple cars along branch avenue killing the man. >> we wish to express our condolences to the family who lost the individual killed by mr. henson's reckless behavior. >> reporter: henson ran but was caught a short time later. he was already on probalgs for an armed carjacking in prince ge

police say 22-year-old larry henson of southeast was behind the wheel of that stolen car that injured a police officer and took the life of an innocent 61-year-old driver in temple hills. >> but, again, mr. henson through his flagrant disregard for the safety of the public has led us to a place where we've lost a life. >> reporter: this all started with what appeared to be a routine traffic stop last night for driving without headlights but quickly escalated according to police when the driver took off, striking and injuring one officer and two additional officers who tried to catch up to the fleeing car. police say there was a brief pursuit at about half a mile later. henson crashed into multiple cars along branch avenue killing one driver 61-year-old charles viveret of clinton. >> we wish to express our condolences to the family who lost the individual killed by the reckless behavior. >> reporter: henson ran but was caught. he was already on probation for an armed carjacking in prince george's. >> every critical incident this set of circumstances will be reviewed by our executive re