SAN JOSE — A man was shot and killed on a dead-end street next to an East San Jose youth center late Sunday, police said, marking the city’s 20th homicide of the year and the 12th of the summer.

Police were called at 11:57 p.m. to LaVonne Avenue east of Sinclair Drive after someone reported hearing shots fired, which was followed quickly by a report that someone had been shot, police spokesman Sgt. Enrique Garcia said in a news release.

Officers arrived to find a man lying on the street, apparently next to his vehicle, suffering from at least one gunshot wound. He died at the scene. The victim’s name was not released pending a positive identification then notification of relatives.

Residents reported hearing three to four gunshots before the initial 911 call. Lt. Chris Monahan told ABC7 that two men seen running away from the scene eluded a police search that included a neighborhood perimeter and helicopter.

Police did not release details about potential suspects or about the circumstances of the shooting, which occurred next to a youth center run by the Mexican-American Community Services Agency.

The shooting occurred where LaVonne Avenue ends, and part of the area cordoned off by police was the eastern portion of the youth-center parking lot, away from the main campus of the adjacent Mathson Middle School.

San Jose has recorded 20 homicides in 2015, compared with 24 at the same point last year. This year, they have occurred in clusters: Eight were recorded in the first three months, followed by none in the next three months, and 12 since the end of June.

Summer violence has spiked enough to prompt the police department to deploy additional officers in high-crime areas downtown and in East San Jose. It was not immediately known if the shooting site was one of the covered areas.

Anyone with information about the case can contact Detective Sgt. Raul Martinez or Detective Jorge Santiago at 408-277-5283 or leave a tip with Silicon Valley Crime Stoppers at 408-947-STOP (7867) or with svcrimestoppers.org.

Contact Robert Salonga at rsalonga@mercurynews.com. Contact Mark Gomez at mgomez@mercurynews.com.