Immigration and Customs Enforcement agents are trying to figure out the true identity of the woman who drove a van that hit a school bus in a crash that killed four children in Cottonwood, Minnesota.
The woman, who told police she was 23-year-old Alianiss Morales, was charged Friday with four counts of vehicular homicide and two other less serious charges in the crash that killed four children.
A special agent in charge of investigations says the woman is from Mexico, and his agency believes she may be in the country illegally. But authorities say Morales is not the woman's real name.
Prosecutors say she failed to stop at a stop sign Tuesday before hitting the bus, which was carrying 28 students from Lakeview School in Cottonwood.
According to a criminal complaint, Morales told police through an interpreter that she stopped at the stop sign. The bus driver told police it appeared the van wasn't going to stop.