COTTONWOOD, Minn. (UPDATED Feb. 27, 2008) — Olga Marina Franco has been charged with four felony counts of vehicular homicide and two misdemeanors in connection with the school bus crash that killed four students last week, according to the Pioneer Press.

Franco, 24, of Guatemala, originally identified herself as Aliannis Nunez Morales, 23, of Mexico. According to the Associated Press Franco is likely an illegal immigrant. Lt. Mark Peterson would not confirm Franco's immigrant status, saying only that this was part of an ongoing investigation.

According to police, Franco broadsided a Palmer Bus Service bus taking 28 passengers home from Lakeview Schools on Tuesday afternoon on a two-lane highway on Tuesday afternoon. The bus then tipped over and onto a pickup truck, according to Christine Kruger, a spokeswoman for the Minnesota Department of Public Safety.

Four students — Hunter Javens, 9; Jesse Javens, 13; Emilee Olson, 9; and Reed Stevens, 12 — died as a result of the crash.

During a Wednesday afternoon press conference, representatives from the area hospital said 13 students and two adults were injured. One was in critical condition, three were in stable condition, six were in fair condition and five had been treated and released. The names of the injured were withheld.

During the press conference, Lt. Peterson said the Minnesota State Patrol was working on the scene and the Department of Public Safety's commercial vehicle division would examine the three vehicles involved. Lt. Brian West said the National Transportation Safety Board would assist in accident reconstruction.

NTSB spokesman Keith Holloway said the agency would likely not initiate a formal investigation into the crash. It did not appear there issues in the crash that the agency had not seen before, Holloway explained.

Neither weather nor road conditions appeared to be a factor in the crash. According to Kruger, the weather Tuesday afternoon was clear and the roads appeared to be dry.

On average, six students die inside the school bus each year. In 2006, four students died in Huntsville , Ala. , when their bus crashed though a concrete divider and plunged off a freeway overpass landing nose first. According to data collected by School Transportation News, no students died inside the bus in 2007.

Cpt. Ken Urquhart, Minnesota 's director of transportation, said it had been at least a decade since multiple passengers had been killed inside a Minnesota school bus. In 1997, three students died in a Monticello , Minn. , crash.

While grief counseling services replaced classes on Wednesday, Superintendent Sheldon Johnson said school would return to a regular schedule on Thursday. During the press conference, Johnson read a note from the mother of one of the boys that was killed.

“‘We know that he is with the Lord, and we ask all parents to give their kids an extra hug tonight and every night,'” Johnson read.