Police are investigating a fatal shooting Friday that occurred during a gathering for one of the victims killed in another shooting in the same area of Riverside earlier this week.

The latest incident was reported at 12:40 a.m. near the intersection of Pierce Street and La Sierra Avenue, Riverside Police Department Officer Railsback said.

Arriving officers found a man down at the scene who was suffering from a gunshot wound and began CPR, Railsback said.

The unidentified man, said to be in his 20s, was taken by ambulance from the scene and later pronounced dead.

Investigators believe there was some type of gathering at the location for one of the victims killed in the same area Wednesday morning.

During the gathering, an argument started and someone pulled out a gun and opened fire, Railsback said.

No one is in custody in connection with the shooting and no suspect description has been provided.

Video from the scene showed several people being combative with officers who were investigating the incident.

On Wednesday, three people were shot at a home in the same area at about 2:15 a.m.

One of the three was pronounced dead at the scene, another was taken to a hospital and was expected to survive.

A third person believed to be involved in that shooting was driven from the location but later died at the hospital.  

Several people were detained in connection with the incident, but it was unclear if any arrests were made.

Investigators have not determined if there are any gang ties involved in the shootings.