(13-WHAM & WHAM News) Two of the four victims in Tuesday’s school bus crash in Brighton have been discharged from the hospital.

The injured teens are John Zakhary, Christa Mickol, Kevin Thapa and Scott Collins.

Of those four, Mickol and Collins are still in the hospital. Mickol's condition was upgraded to satisfactory on Wednesday afternoon. Collins remains  in guarded condition.

Zakhary and Thapa have both been discharged.

None of the four students on board the bus was hurt.

Police say the bus was traveling at a low rate of speed around 3:30 on Warren Avenue when the sedan carrying four students crashed into the back of it, becoming wedged under the tires.

Firefighters had to pry the students from the mangled car. At this point, it's not clear if the students were going too fast. That's part of the investigation that continues today.

“It was bound to happen at some point,” said neighbor Jeff Spero. “It’s because of the way people drive--it was a cut-through street."

“I’m pretty shocked,” said one victim’s friend Jack Mayer. “I don't know—it’s hard to react to this."

The students on the bus--from the council rock elementary--were not seriously injured at the time, and neither was the bus driver.

Investigators are looking at the car’s speed, and the legality of the situation in the context of state laws about drivers under the age of 18 and the number of passengers allowed in the car. The ages of the students weren't released by police.