Police released a 47-year-old Kalihi murder suspect this afternoon pending an investigation.

The suspect was arrested Friday morning on suspicion of second-degree murder in connection with the death of a 54-year-old woman and was released about 1:15 p.m. today, police said.

Police said the man struck the woman at about 4:15 a.m. Friday after which she became unresponsive. Someone called 911 and paramedics pronounced the woman dead at the scene at 607 N. King St.

Responding officers arrested the man at the scene, where he lives, at about 6:30 a.m. Autopsy results are pending.

A neighbor who lives on the same floor as the man at Island West Apartments said the couple lived together and fought frequently. The neighbor described the man as unstable and said he often appeared intoxicated.