Gwinnett County police say at least six people were killed and 10 were injured in a crash involving a passenger van on Interstate 85 Saturday. Police said the crash happened in the northbound lanes of I-85 near the I-985 split just after 6:30 p.m. Police said the vehicle rolled over onto its side and caught fire. Passersby attempted to pull victims from the burning van. All six victims died at the scene and several others were taken to the hospital. Police said there were a total of 16 people in the van. Police have not identified the victims but said all the victims appear to be adults and were part of a sober living group. Channel 2's Tyisha Fernandes spoke with a witness who was driving on I-85 Saturday night. He saw cars in front of him swerving to miss something. That is when he saw the van on fire.