Two teenagers who are connected to a Hispanic gang were arrested yesterday and charged in shootings in a cemetery that left one teenage girl dead and another critically wounded, Prince George's County police said.

They said Jeffrey Rene Villatoro, 16, of no fixed address, was charged with first-degree murder in the incident Monday night at the George Washington Cemetery in Adelphi. Jesus Canales, 19, of no fixed address, was charged with attempted murder, police said.

Both have ties to a gang in Langley Park that is affiliated with Mara Salvatrucha, a Salvadoran immigrant gang, police said. MS-13 has been implicated in attacks in Northern Virginia, but police said they did not know of a motive in Monday's attacks.

Meanwhile, Montgomery County police said they obtained an arrest warrant charging a man with fatally shooting his former girlfriend Monday night in Silver Spring.

The suspect was identified as Gerardo Gutierrez Barilla, who police said is in his late fifties and lived with the victim until about two weeks ago. The woman, 39, was not named because her family had not been notified of the death.

She was killed about 8:30 p.m. at a bus stop on Piney Branch Road. A witness gave police the tag number of a car, and police said they were led to Barilla after finding the car and questioning a man who drove it from the homicide scene.

Police said Barilla was last seen in a white long-sleeve shirt, dark pants and a black and blue jacket. He is known to frequent the 8100 block of 15th Avenue in Langley Park, said a police spokeswoman, Officer Julia Gilroy. He is about 5 feet 5 inches tall with short black hair, Gilroy said.

Police had said they were investigating whether the Montgomery and cemetery shootings were linked; yesterday, they said they were not.

In Prince George's, police said they had not located relatives of the 17-year-old who was killed in the cemetery. The wounded girl, who is 15, was in critical condition.

Staff writers Jamie Stockwell and Martin Weil contributed to this report.