Fatal stabbing reported at house party near Covina

COVINA -- A young man died early Saturday after an argument at a house party escalated into a stabbing in an unincorporated county area near Covina, authorities said.
Coroner's officials did not release the man's identity pending notification of his family. He was initially described as being 19 years old.
"Approximately 20 to 25 young adults were attending a party in the 20000 block of Stephanie Drive when, at approximately 2:00 a.m., two men began arguing," Los Angeles County sheriff's Sgt. Diane Hecht said in a written statement.
"The argument escalated into a fight and the victim was stabbed in the upper torso," she said.
Officials took the wounded young man to a hospital where he was pronounced dead.
The assailant ran from the scene and had not been found, the sergeant said.
Though the suspect was described by authorities only as another young man, officials said investigators had solid leads as to his identity.
The weapon used in the stabbing was not found, Hecht said.
A man who answered the door at the home where the stabbing occurred did not wish to comment.
Several nearby neighbors said they weren't aware anything had happened until the sheriff's patrol cars swarmed the street.
Detectives from the Sheriff's Homicide Bureau are handling the investigation. Anyone with information is asked to contact the bureau at 323-890-5500.