Police searching for shooter who killed man at rap concert in Sharpstown

HOUSTON, Texas (KTRK) -- Officers from several different agencies were working off-duty jobs as security at Arena Theatre when a man was shot at a concert there on Sunday, investigators said. The law enforcement agents tried to help the man, but he died.

Shots were fired at about 11:40 p.m. in the 7300 block of Southwest Freeway near Fondren Road, Houston police said.

Police said there were a lot of shots fired. ABC13 was at the crime scene Monday morning and captured video of the markers for the shell casings.

Initial reports said the concert at the Arena was still going on. Police think the man shot and killed had been at the concert.

Police did not release any information on the shooter, but the venue holds up to 2,800 people so there were plenty of people who may have seen something.

As for the shooter, police did not release any information. Officers are trying to figure out a timeline of what happened.

"We do have several witnesses, but it doesn't sound like there was an altercation. I don't know what the motive is for this, but there wasn't a fight or anything going on at the time," said HPD Lt. J.P. Horelica.

There are a lot of videos on social media showing the concert inside the theater and you can see a lot of security guards there. The crowd was into it, the performers were into it and the vibe was laid back and people were having fun.

Some witnesses suggested the victim may have been robbed, but police haven't confirmed that.

According to Arena Theatre's website, up to 2,800 people fit in the venue. So, there were plenty of people who may have seen something or recorded something on their phone. If that's you, and you haven't talked to police yet, you are urged to call the Houston Police Department.

For news updates, follow Courtney Fischer on Facebook, Twitter and Instagram.