Keith Holiday had just started his shift Thursday night when police said he was shot.

They believe it was a confrontation that started with trespassing after notice.

Police are still searching for the shooter.

Tulsa police say that a security guard working at a bar was shot and killed overnight after an argument.

Tulsa police say it happened around 1:20 a.m. outside DD’s Double Shots near 11th and Sheridan.

It started as an argument between a DJ and security from the bar, identified as 38-year-old Nathan Hull, and a man identified as Chris Bratton in the parking lot.

“He brought laughter to people when they were sad,” said Jennifer Luong, Hull’s coworker and friend. “He brought comfort to people that were hurting.”

Through the investigation, detectives learned that Hull and another witness stepped outside to smoke when they found Bratton possibly attempting to break into cars. When they told him to leave, Bratton pulled out a gun and fired twice, hitting Hull in the chest.

Bratton then ran off down the street.

Witnesses from the bar followed the suspect down the road to a gas station where they say he tried to hide his gun in the purse of a stranger. Officers arrested him on the scene and retrieved the gun.

A GoFundMe has been created for his longtime girlfriend and children. If you would like to donate, click here.

This is Tulsa’s 31st homicide for 2021.

Also in Oklahoma, police are looking for a man who critically injured a security officer by running him over during a burglary a vehicle auction business.

Police and EMS responded to the Insurance Auto Auction facility near Wilshire and the I-35 service road after the security officer stopped a man who was attempting to steal a car. The man gunned the vehicle, running over the security officer and then fled.

And a Jefferson County Kentucky deputy sheriff work security at a Louisville car dealership was gunned down early Thursday morning.

As he sat in an unmarked vehicle, someone ambushed him and fired several shots inside the vehicle striking deputy Sheriff Brandon Shirley, 26, at least twice but he was able to call for

help and died at the hospital.

Two Nashville security officers were shot during an Active Shooter incident where an armed employee entered the Smile-Direct Club and opened fire.

One security officer is in critical condition.

Several other security officers have also been shot during this timeframe.