-Sunrise, AZ. -March 28, 2033. Police have released body camera video of a deadly officer-involved shooting at a Walmart parking lot in Surprise. The shooting happened on March 28 around 1 p.m. near Litchfield Road and Grand Avenue. Jamie Rothschild with the Surprise Police Department said the man was reported as an unwanted person in the store. When officers arrived, they found 28-year-old Joseph Martin in the backseat of a car with beer cans littered outside. He was asked to leave the parking lot but reportedly refused to do so. In the body camera footage, officers could be seen trying to physically pull Martin out of the car before the shooting. Police reported hearing Martin say "I have a gun" and said they saw him reach toward his waistband. "That's when the officer involved shooting occurred," Rothschild said. An officer can be heard in the bodycam video yelling, "He said he's got a gun," and the 28-year-old screams in response. Martin died from his injuries at the scene. A pistol was found in his right pants pocket, police said. The West Valley critical incident response team is investigating.