Two adults, two children and a dog in Seattle were found dead after a suspicious house fire Saturday morning, police say.

Authorities arrived to the scene at around 8:45 a.m. and found the Wallingford neighborhood residence in the 1000 block of N 48th St. and Whitman Avenue North engulfed in flames. Police initially responded to the scene for a call about a reported shooting near the location.

According to Seattle Police Department, an 11-year-old girl escaped the burning house and ran to her neighbors to get help.

"The surviving child was treated for minor injuries and is in the care of emergency personnel until she can be reunited with family," the Seattle Police Department said in a statement.

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The victims' causes of death are unknown, and authorities are investigating if the fire was intentionally set. The building's doors were barricaded during the fire, making it difficult for first responders to get inside.

"We do know that the front door was barricaded with some sort of object that officers were trying to kick down and try to open the front door," police chief Adrian Diaz said at a press conference, according to FOX 13 Seattle. 

"There also was the fire going on, so they were overcome with the smoke, so they ended up retreating and that's when we started working in conjunction with the fire department," Diaz added.

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The fire was under control by 9:40 a.m., FOX 13 reported. Seattle Police Department's homicide detectives and arson investigators searched the scene for evidence. Authorities are speaking with the surviving victim to find out more information about the incident.

"We are working with that child to determine what happened as well," Diaz said at the presser. "And then also try to figure out how to get that person the resources and services that are needed."

Seattle Police Department is actively investigating the case. No further details are available at this time.

Officials in Pennsylvania say they believe escaped murder convict Danelo Souza Cavalcante broke into a home in Pocopson Township.

Cavalcante escaped from the Chester County Prison on Thursday morning and the U.S. Marshals Service says he's also "wanted for a homicide in Brazil." Officials believe he's headed south.

Immigration officials said they aren't sure when exactly he entered the U.S., but told Fox News Digital that he was not "inspected or admitted by a U.S. immigration official."

During a Saturday afternoon press conference, Chester County District Attorney Deb Ryan said that officials believe Cavalcante broke into a home, but was stopped.

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"There's a strong belief that it was Mr. Cavalcante who went into this home and was thwarted by a homeowner at the time. He matches the description, but we have not been able to confirm to the homeowner who saw him face to face at the counter," Ryan said, speaking to the break-in in the Pocopson Township home.

The alleged intruder was described as a "small man wearing a backpack," which Ryan says fits the description of Cavalcante.

Earlier on Saturday, the Chester County District Attorney's Office announced that the man was spotted in a residential area over the weekend.

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"Escaped murderer, Danelo Cavalcante, 34, of Royersford, PA, was observed on a residential surveillance camera on September 2, 2023, at approximately 12:30 a.m. in the 1800 block of Lenape Road, approximately 1.5 miles from the prison," the office wrote on social media.

"He was wearing pants, a light-colored t-shirt, and white sneakers. His appearance has remained unchanged. He has long, black curly hair and is wearing a backpack. Police also received a report of an attempted burglary at 11:30 p.m. in the 1000 block of Ballintree Lane in Pocopson Township.," it added.

The sighting occurred in Pocopson Township, and Ryan is encouraging residents to stay inside.

Cavalcante was convicted of murdering his ex-girlfriend in 2021 and sentenced to life in prison.

"Law enforcement is requesting that residents in the area remain indoors at this time. Lock your vehicles. Review your surveillance cameras and contact police if you observe anything suspicious. Danelo Cavalcante is considered an extremely dangerous man. Please remain vigilant in assisting with this search. If you see this individual, do not approach him. Call 911 immediately," Ryan said.

Fox News' Timothy H.J. Nerozzi contributed to this report.