Days after the Lakeview School bus crash, the U.S. Immigration & Customs Enforcement Agency (ICE) joins the investigation.

"We are working closely with the state patrol into the circumstances surrounding the accident, including the legal status of the driver of the van," said ICE agent Tim Counts.

23-year-old Alianiss Nunez Morales had been driving the van, which investigators say smacked into a Lakeview school bus. That accident sent her to the hospital. When Morales was released Thursday afternoon, the Minnesota State Patrol made a probable cause arrest for criminal vehicular operation. Lyon County Sheriff Joel Dahl said, "They have talked to the prosecutor. They have enough information whatever that has entails at this point to take her into custody."

Before formal charges are filed, the Minnesota State Patrol will continue to question witnesses. James Hancock was driving a truck the bus ran into and told the Star Tribune of Minneapolis:

"I saw the maroon van run a stop sign, it blew over the railroad tracks and hit the bus, sending it sliding into me. The next thing I knew, they were hauling kids out and it was chaos."

On Friday, formal charges are expected to be filed before Morales appears in Lyon County Court at 11:30 a.m. KSFY will attend her court appearance and will have the details on Friday's KSFY Live At 5:00, 6:00, and 10:00.

Drew Sandholm can be reached by phone at (605) 373-7372 or by e-mail.