At least five people were injured after heavy rains and tornadoes struck Oklahoma from Saturday night into Sunday morning.

It's unclear how many tornadoes struck the state, but they left damage to several buildings, downed power lines, traffic lights and trees, according to the Oklahoma City Fire Department. A video shows that Newcastle Elementary School in the Oklahoma City area sustained extensive damage, including tiles falling off the building's facade.

Elsewhere in Oklahoma City, piles of debris, including wood and sheetrock, could be seen scattered around a community. According to the fire department, investigations are still underway to determine the full extent of the damage.

Five people were taken to local hospitals with non-life-threatening injuries, while several others received self-treatment, according to fire department spokesman Scott Douglas. It's not clear whether they were injured by the tornadoes or the heavy rains, but firefighters said they responded to several flooded vehicles.