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Seven people were wounded in an overnight shooting Sunday at the Sevilla Nightclub in Riverside, police said.

Officers were called to the nightclub in the 3200 block of Mission Inn Avenue at 12:04 a.m. Monday, the Riverside Police Department stated.

The caller reported that shootings had occurred both inside and outside the nightclub.

Investigators believe the shooting may have started following an altercation inside the club. Several people were apparently involved in the fight and subsequent exchange of gunfire, Officer Ryan Railsback said.

Arriving officers found two victims suffering from gunshot wounds, a Police Department news release stated.

Five more victims of the shooting later arrived at area hospitals on their own to receive medical treatment, police stated.

None of the injures were described as life-threatening, Railsback said.

No descriptions of the gunmen were given.

Investigators are hoping surveillance video will lead them to the shooters.

Anyone with information was asked to contact detectives at 951-353-7130 or 951-353-7134.