Officials on Thursday identified one of two people shot to death in south Minneapolis in connection with what police said were three shootings carried out a day earlier by the same gunman.

Roland Scott Littleowl, 20, was shot in the head Wednesday in an alley in the 2500 block of S. 17th Avenue, the Hennepin County Sheriff's Office said. The Medical Examiner's Office said Littleowl died at the scene.

The shooting, the first of the three within 16 hours, was reported at 4:40 a.m. and also left a man in his 30s critically wounded, police said.

Minneapolis police have arrested a man suspected in the three shootings that left a total of four people hit by gunfire, according to police. Officials have yet to identify the suspect, who has yet to be charged.

The first two shootings occurred near homeless encampments. Police have yet to offer motives for any of the gunfire.

The second shooting unfolded four blocks away, in the 2500 block of S. Bloomington Avenue, at 4:15 p.m. Police Chief Brian O'Hara said a man in his 30s was standing by a garage in an alley when a group of people passed by. One in the group approached the man and shot him in the head.

In the third incident, a man suffered a potentially life-threatening gunshot wound at 7:20 p.m. in the 2300 block of S. 17th Avenue. The suspect was arrested 15 minutes later near E. 26th Street and S. 17th Avenue, according to police.

The shootings have escalated frustrations surrounding encampments of unhoused people on the city's South Side. Residents have expressed concerns about sanitation and safety, while service providers and advocates have argued the city lacks shelter space, affordable housing and other resources.

Elliot Hughes contributed to this report.