The remains of six family members have been recovered from a burned home in southeastern Pennsylvania, including those of a man who is believed to have shot two police officers on Wednesday, the authorities said on Friday.

Jack Stollsteimer, the Delaware County district attorney, said at a news conference on Friday afternoon that the recovery of the bodies was “gruesome work” that had lasted into Friday.

Mr. Stollsteimer said on Thursday that three adults and three children had been feared dead in a fiery episode that began on Wednesday afternoon when the police responded to a report that an 11-year-old girl had been shot at a home in East Lansdowne, Pa., just west of Philadelphia.

When police officers arrived at the home, they were immediately met with gunfire, and two officers were injured, according to Mr. Stollsteimer. Some time after the officers were shot, the home burst into flames, and officials had to wait overnight for the fire to subside before they could begin recovering the bodies, Mr. Stollsteimer said.

The names of the deceased individuals were not disclosed by officials on Friday. Mr. Stollsteimer referred to them only as the Le family. Mr. Stollsteimer mentioned that a medical examiner would soon commence the process of positively identifying the victims.

“From seeing it firsthand, these are charred remains,” Mr. Stollsteimer said. “They are unrecognizable human beings. Not only was there an intense fire, but the building collapsed on these individuals as they were inside.”

Mr. Stollsteimer revealed that based on information provided by grandparents in the Le family, Canh Le was suspected of shooting one of his young nieces, which he described as “unbelievable.”

Chin Le, the mother of Mr. Le, stated in an interview with WPVI on Friday that her son was the gunman. Ms. Le informed the station that Mr. Le was deceased and that it was believed the other victims were her other son, Xuong Le; his wife, Britni McLaughlin-Le; and their three children, NaKayla, 13, NaTayla, 17, and Xavier, 10.

On Friday, many questions remained unanswered, including the motive behind the incident, whether Mr. Le had also shot other family members, and the cause of the fire.

“Our assumption is that they were shot by gunfire, and then there was a fire set,” Mr. Stollsteimer said. “But we have no idea whether or not that’s true.”

The remains of a torso were discovered at the residence, along with a melted rifle, according to Mr. Stollsteimer. If those remains are positively identified as those of Mr. Le, Mr. Stollsteimer stated that the “criminal investigation will be closed.”

Detectives were struggling to determine the motive behind Mr. Le’s actions, Mr. Stollsteimer said.

“He just went haywire,” he explained.

One of the police officers was shot in the leg, while the other was shot in the forearm, Mr. Stollsteimer added, noting that both officers sustained “serious traumatic injuries.” One officer was discharged from the hospital on Thursday, and the other was expected to be released on Friday.

Mayor Majovie Bland of East Lansdowne described the area as “a close-knit community” and expressed having seen the Le family’s children walking to school.

“We’re in pain,” he shared. “We’re hurting.”