2 Students Dead in Houston School Bus Crash Two others and their bus driver seriously injured on way to high school.

 -- A school bus crash has left two high school students dead and two others and their bus driver seriously injured, Houston officials said.

The crash happened around 7 a.m. today after the bus hit and went over the guardrail on the freeway and flipped on the road below. A woman driving a Buick next to the bus hit it after thinking a car was driving into her lane, Houston Police Department spokesman Victor Senties told reporters at a news conference this morning.

"The bus driver attempted to over-correct and put it over the overpass," Senties told reporters of the bus.

Senties said the woman was detained by police but no citations or charges have been filed against her. There were four students, two girls and two boys, aboard the bus. One female student died at the scene and the other girl was declared dead at a hospital.

Law enforcement officials shut down a portion of the freeway pending an investigation, according to ABC station KTRK-TV in Houston. The students were headed to Furr High School.

“We are deeply saddened by this tragedy and the loss of one of our students,” Houston School District Superintendent Terry Grier said in a statement. “I ask all of the HISD community to join me in praying for all of those involved.”

The condition of those injured was not immediately released.