Prosecutors said Brandao was killed after she learned Cavalcante was wanted for murder in Brazil and threatened to expose him to police.

Following Brandao's murder, Cavalcante fled to Virginia, where he was arrested and brought back to Pennsylvania to face justice for Brandao's killing.

Cavalcante escaped from the Chester County Prison on Thursday. He was discovered missing from the prison around 8:50 a.m. He was being held there pending transfer to a state correctional institution.

The escape remains under investigation by the Chester County District Attorney's Office and the state police.

Citing the ongoing investigation, Chester County District Attorney Deb Ryan declined to provide details Monday on the circumstances of the breakout.

\"The prison is very aware of the vulnerabilities that they have and they have made efforts to correct those vulnerabilities,\" Ryan said.

Pennsylvania Gov. Josh Shapiro issued a statement on social media Monday advising residents of Pocopson Township to remain vigilant, keep their doors and windows locked and report anything suspicious to authorities immediately.

Bevins said police have investigated two home burglaries reported in the area since the escape, adding, \"I can't confirm it was him, but they are of interest to us.\"

It was the second time in less than two months that a dangerous inmate had escaped from a Pennsylvania prison. Inmate Michael Burham, who is a suspect in the rape and murder of a 34-year-old woman in Jamestown, New York, escaped from the Warren County Jail in northern Pennsylvania on July 6.

Burham, an Army reserve sergeant who authorities said was a \"self-taught survivalist,\" was captured on July 15 following a massive manhunt in the northern Pennsylvania woods.

ABC News' Ahmad Hemingway, Meredith Deliso and Nadine El-Bawab contributed to this report.

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