Honolulu police said a husband and wife were arguing with an unidentified man at a Chinatown bus stop when another unknown man arrived with a gun and fatally shot the 24-year-old woman Friday night.

The woman was shot in the head, police homicide Lt. Deena Thoemmes said Sunday afternoon.

Thoemmes did not release the woman’s identity nor reveal the husband’s health status.

Police homicide detectives have interviewed numerous witnesses, she said, adding that they are trying to find the suspect. Detectives were continuing to process the scene, and were reviewing 911 calls and surveillance videos.

Thoemmes said the shooting does not appear to be a random act.

Police responded to an 11:19 p.m. call Friday that a woman had been shot near 159 N. Hotel St.

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She was taken to the Queen’s Medical Center, where she was pronounced dead at 2:30 a.m.

The case was reclassified from attempted murder to second-degree murder.

The Honolulu Medical Examiner’s Office did not release the woman’s identity Sunday.

Thoemmes did not take questions, saying that the suspect has not been apprehended.

Anyone with information on the shooting is asked to call 911 or Honolulu CrimeStoppers at 808-955-8300.