Philadelphia police have arrested two youths, ages 16 and 14, in the rape of a 19-year-old woman in Port Richmond who had been on her way home after a workout.

The woman was walking home from a gym on Aramingo Avenue around 10:20 p.m. Thursday when she was approached by the two teens, said Capt. John Darby of the Special Victims Unit.

They struck up a conversation with her that quickly turned threatening, Darby said, and then grabbed at her. The woman tried to flee, Darby said, and the boys pulled out a handgun and demanded money.

They forced her behind a house on the 4000 block of Richmond Street, he said, and both sexually assaulted her.

They told the woman that they would kill her and her family if she told police, Darby said.

But the woman did report the assault to police, and the teenagers were caught a short distance from the scene of the crime. Detectives were still investigating the area on Friday, Darby said, and looking for surveillance footage.

The teenagers were found with several of the woman's belongings, and she was able to positively identify them for police, Darby said.

Darby said the teens will be charged with rape, robbery, and related charges.

The District Attorney's Office was deciding whether they would be charged as adults.

awhelan@philly.com

215-854-2961 @aubreyjwhelan