Honolulu police have opened an attempted murder investigation in connection with a stabbing outside Ft. Shafter in Kalihi Friday.

Police said the victim was stabbed during an argument with a 33-year-old man about 8:40 p.m. They have not arrested anyone.

The city’s Emergency Services Department says an ambulance crew picked up the victim at a Meyers Street address. The crew said the victim had a stab wound on the upper right side of his body. The ambulance transported the man to an area hospital in serious condition.