it happened monday near orangeburg, about 70 miles northwest of charleston. terrell brown has the story. >> reporter: rescue crews in orangeburg, south carolina, found two young boys still strapped in their car seats as they pulled their mother's car from the edisto river monday morning. the toddlers are identified as 18 month old ja'van duley and 2-year-old brother devean. the boy's mother, shaquan duley, is being held on a charge of leaving the scene of an accident. her car was found underwater near a rural boat landing. >> she left the location, she walked away from the vehicle, maybe three-quarters of a mile away. >> reporter: that's when police say she flagged down a highway trooper for help because she didn't have a cell phone. investigators want to know what caused the car to veer into the river in the first place and whether this was an accident. police say the mother showed some emotion, but was not overly distraught. they also believe there are holes in her story. monday's incident is eerily reminiscent to another south carolina case. back in 1994,

manuel gallegus, cbs news, orangeburg, south carolina. >>> other news this afternoon, uc-berkeley maintainse top ranking in the nation for public universities. that's according to the latest edition of the best colleges list put together by u.s. news & world report. cal ranks 22nd overall. harvard is number one followed by princeton. yale number 3 and then columbia, stanford, penn tied at number 5. the u.s. news ranking by the way widely considered the most influential of all those college lists. >>> lake tahoe just as year as 10 years ago. in 2009, the lake's waters were clear to an average depth of about 68 feet. that number remains steady for the entire decade. the apparent stabilization of the lake's clarity suggests restoration projects are working. for years, conservationists have been trying to block fine particles from getting into the lake. they believe they are succeeding. >>> do you want to know if your man is going to cheat on you? take a look at his paycheck. we'll explain. >>> and we have some sunshine along the coastline. here we are. live look out toward ocean beach and coup

. >>> in orangeburg is the share of orangeburg county, larry williams, who you saw in the piece a second ago. mr. williams, good morning to you. >> good morning. >> you said that you don't think this was an accident from what you have seen and heard so far. what can you tell us about your feelings at this point? >> from person responding from the location where the alleged accident occurred, i found no physical evidence there to support what she had reported, leaving the road and going into a boat ramp where the children was found. so causes a lack of evidence and the -- in her statement. and in her verbal and written statement initially. i found there were issues that need to be unravelled and we began an in-depth investigation into what really happened with these two minor children. >> what were some of the issues, though, from what you heard from her verbally during the interview? you said she lacked emotion and said some of the stories didn't quite add up. what are some of the stories that didn't add up, in your estimation? >> well, she didn't have -- for someone that's just plunged

a cell phone camera captured the scene near a boat landing near orangeburg, the boys still strapped intioning the mother. she has beenhargth acc. >>> a federal safety review of offroad racing is now under way after saturday's deadly crash in california's mojave desert. this morning we're learning more about the eight victims who were killed in that incident, including one man who sacrificed his own life. mike von fremd reports from lucerne valley, california. >> reporter: the spot on the desert track is called the rock pile. and as the super-charged sport truck was racing to make the jump, andrew therrin and his 3-year-old daughter were directly in its path. >> hey, everybody off the track! >> the truck bounced right in the air and smacked andrew right down and then went straight in the air and smacked everybody. and i just saw bodies flying. >> reporter: the single father pushed his daughter and a young boy out of the way. the children survived. therrin was killed. >> they wey him. he had to save their life. he's a hero in my book. >> reporter: admission to the offroad races is free a