The two men who were found dead in an Arlington apartment Tuesday morning were victims of a double homicide, police confirmed.

The mens’ bodies were discovered Tuesday morning in the Hall’s Hill area. Police said Wednesday that they know what killed them, but are not releasing that information to the public because it is part of their investigation.

“We believe it was an isolated incident,” said police spokesman Dustin Sternbeck.

Sternbeck said detectives did not find a weapon in the apartment, and there were no obvious signs of robbery in the home.

Keefe Spriggs, 59, and Carl Moten, 31, were found after a friend could not reach one of the men and asked a maintenance man to check on them.

Spriggs lived in the apartment in the 1900 block of North Culpeper Street where he and his friend were found dead. Moten, who had a job but was homeless, was staying there.

Spriggs and Moten were the third and fourth homicides in Arlington in the past two weeks. For more than two years prior, Arlington did not have a homicide.

This item has been updated.