PORTLAND, Ore. (AP) — Two teens have been arrested on suspicion of killing a man at a Tigard apartment complex, police said.

Tigard police said the girls, 16- and 17-year-old relatives, are being held in a Portland juvenile detention center on suspicion of murder and robbery in the Jan. 29 incident, The Oregonian/OregonLive reported. They were arrested Thursday. Their names have not been released.

Police said one of the girls stabbed Leroy Xavier Wass-Morill during an apparent “targeted drug-related robbery.” A physical altercation broke out at some point during the incident at a Southwest Hall Boulevard apartment complex, police said.

The stabbing victim was pronounced dead at a hospital.

No additional information about the circumstances of the man’s death has been released.