At three people were killed in a shooting at a Walmart store in Oklahoma on Monday, according to the US media. According to TNN television, Duncan Police Chief Danny Ford said the shooting took place outside the store and the suspect is one of those killed.
Schools in the area had been placed on lockdown temporarily before being given an "all clear" by local police, according to a Facebook statement from Duncan Public Schools.
The incident comes a day after four people were shot dead and six others wounded while watching a football game in the backyard of a central California home on Sunday.
The police were called to the scene after at least one person opened fire into a crowd of about 35 people gathered outside the house in Fresno, around 200 miles (320 kilometers) north of Los Angeles. All four of the dead and the six treated for "non life-threatening" gunshot wounds were men aged between 25 and 35.
Police spokesman Bill Dooley said officers were looking for surveillance footage and witnesses to track the suspects. Choua Vang, who lives near the site of the attack, said that Sunday's incident was the second shooting in the area in as many weeks.