PORTLAND, Maine — State and local fire officials are continuing their investigation into what caused a deadly fire Sunday morning in Portland, though foul play is not suspected.

Two people were found dead after a fire broke out at a three-story four-unit apartment complex on Munjoy Hill.

The Portland Fire Department responded to 43 St. Lawrence St. around 2:15 a.m. where emergency crews faced heavy fire conditions on the back porch of the building, Maine Department of Public Safety spokesperson Shannon Moss said in a news release.

Two people were found dead inside the apartment, and autopsies were performed to determine their cause and manner of death.

Autopsy results released Tuesday determined that two Portland residents, tentatively identified as 45-year-old Nicole Niehoff and 40

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