A 44-year-old man faces murder charges after police said he barricaded himself and others inside his apartment and lit it on fire, killing two people.

Anthony Andre Allain, who was hospitalized after the blaze, will be charged with two counts of murder and first-degree arson, said Prince George's County police spokeswoman Julie Parker.

Authorities responded to the blaze on the 7600 block of Fontainbleau Drive in New Carrollton about 7:45 p.m. Sunday. First responders found flames shooting from the top of the three-story Fountain Club Apartments with people trapped inside.

Fire crews knocked down the fire in about 15 minutes and discovered a dead adult male in the apartment where the fire started.

Police found a woman on the ground suffering from serious burn injuries and massive upper-body trauma. The woman was taken to a hospital where she died.

Witnesses told police they saw Allain jump from the third story and run to a nearby apartment building. Officers found Allain hiding in the building's basement, suffering burn injuries, Parker said. Allain was taken to a hospital. He is expected to survive his burns.

Police were still working to confirm the identity of the victims. They believe the man and woman also lived in the same apartment as Allain.

Capt. George Nichols, of the Homicide Unit, said Allain apparently had an altercation with a fourth person before the incident.

"We're not sure how that plays into the incident itself," Nichols said.

Police said Allain was affiliated with the Guide Program Inc., a nonprofit organization that works with the mentally ill.

Wendy Enderson, a spokeswoman for Guide, would not say how Allain was connected to the program. In a statement, she said the agency was shocked by the incident and the deaths of two people.

"We neither own nor lease the residence where the fire took place and are unable to offer any comment on the residents," Enderson said.

Fire officials are still investigating what exactly caused the fire.