A 17-year-old from Northeast Washington was charged Thursday with stealing a car at gunpoint in Prince George’s County and leading police on a chase that ended in a head-on collision with a D.C. school bus, leaving a child and adult injured.

Prince George’s police charged Malik Hasaam Wilkins, of the 5300 block of Clay Terrace, as an adult with armed carjacking, fleeing and eluding, and a weapons violation. He was being held in the District pending extradition to the county.

Authorities said that in addition to the two people on the bus who were injured, a pregnant woman and a teenager were seriously hurt during a separate crash involving the stolen Mercedes. Two others on the bus, an adult and child, were not hurt, police said.

Police said that about 7:30 a.m., two men wearing ski masks and armed with handguns demanded a car from a driver in the 2200 block of Seton Way in District Heights. Police said officers spotted the car a few minutes later on Southern Avenue on the District-Maryland line.

Officer Nicole Hubbard, a Prince George’s police spokeswoman, said that the driver refused to stop and that officers chased the car for about a mile into the District and onto Ridge Road in Southeast Washington.

Police said the driver tried to turn off Ridge Road onto Texas Avenue and lost control of the car, hitting another one waiting at a red light. The teenager and pregnant woman were hurt in that collision. Hubbard said the Mercedes then hit the school bus on Texas Avenue.

The spokeswoman said the driver and occupant ran, but officers arrested Wilkins and recovered a handgun. Hubbard said the second man escaped.

Prince George’s officers are allowed to pursue suspects into the District in felony cases, Hubbard said.