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Eleven teenagers were injured in a shooting at an after-prom party in Texas over the weekend – and a second shooting less than 20 minutes away may be connected, authorities said.

Deputies from the Jasper County, Texas, Sheriff’s Office responded to a disturbance at a home north of Jasper just after midnight on Sunday, the agency said in a Facebook post.

Deputies initially found nine people with non-life-threatening injuries, the post said Sunday. A total of 11 teens eventually were found to have been injured by gunfire, officials said in a news conference on Tuesday.

The ages of the victims range from 15 to 19, officials said Tuesday. Three still were in a hospital Tuesday, officials said. Details about their conditions were not available.

“What should have been a special evening unfortunately turned into a tragic event that will be remembered for all the wrong reasons,” Jasper County District Attorney Anne Pickle said in Tuesday’s news conference.

The violence is the latest in a relentless series of shootings in America, many of which have taken the lives of or seriously injured young people.

Mass shootings have escalated, occurring at a record pace nationwide. At least 172 have been reported so far this year, according to the Gun Violence Archive.

On April 15, four young people were killed – including a beloved high school football player – and at least 32 others were hurt during a Sweet 16 birthday party in Dadeville, Alabama. The ages of the four who were killed ranged from 17 to 23.

At least six people – including four teenagers – have been arrested and face murder charges in the massacre, Alabama authorities have said.

Texas authorities interviewing people of interest

Following the Texas after-prom party shooting, at least eight victims were taken to a nearby hospital by personal cars and some victims were transferred to a hospital in Beaumont for further treatment, authorities said.

While authorities have not yet identified a motive for the shooting, they were interviewing several witnesses and people of interest, the sheriff’s office said in a Sunday evening news release.

The sheriff’s office said it is also investigating another shooting that occurred just miles away, adding there may be a “possible connection” between the two.

Authorities did not offer further details about the second incident.

Jasper is in eastern Texas, roughly 30 minutes west of the Texas-Louisiana border.