In a packed courtroom, seven witnesses testified Thursday morning as the preliminary hearing for two suspects charged in connection with the March homicide of Tecumseh Police Officer Justin Terney began in Pottawatomie County District Court.

In a packed courtroom, seven witnesses testified Thursday morning as the preliminary hearing for two suspects charged in connection with the March homicide of Tecumseh Police Officer Justin Terney began in Pottawatomie County District Court.

Terney was shot during a traffic stop on March 26 and died the next morning from his wounds.

Byron Shepard, 36, charged with first-degree murder, and Brooklyn Danielle Williams, 22, who is charged with second-degree murder, both appeared for the joint preliminary hearing, which will resume with additional witnesses taking the stand later this afternoon.

Shepard was Williams’ passenger on the night of a March 26 traffic stop. He is accused of causing the death of Officer Terney by inflicting mortal wounds when firing a Springfield XD semi-automatic 9 mm pistol into the abdomen and leg of the officer during the traffic stop.

Among the first few witnesses was Tecumseh Police Lt. Mike Mallinson, who arrived with another officer on Terney's traffic stop scene where Shepard was giving false names to Terney.

Mallinson testified the suspect ran from Terney, who gave chase, and spoke about how he also ran into the darkness that night, where he heard several gunshots exchanged then moved in a tactical fashion.

He found Terney laying on the ground next to a bale of hay, he testified, and Shepard was on the ground screaming from his injuries.

Mallinson, who fought back emotions while on the witness stand, said he told Terney help was on the way; he said he kept talking to the injured officer while maintaining cover on the injured defendant.

Mallinson testified that Terney told him, “Mike, I think I'm going out.”

Part of the preliminary hearing testimony also referenced Terney's dash cam video. Special District Judge David Cawthon, who is presiding over this hearing, will likely view the video as well.

Testimony indicated Williams, the driver, stayed in the vehicle during the traffic stop and after Shepard fled. Tecumseh Police Officer Alana Colan, who was riding with Mallinson that evening, testified that they arrived for backup and she stayed at the vehicle with Williams as Mallinson followed Terney's foot pursuit in the treeline of the wooded area.

She testified about hearing Officer Terney warn the suspect he was going to be tased and also that she heard the taser, then heard the taser zap again without deployment, followed by 4 to 5 gunshots.

She heard screaming that she said didn't come from Terney or Mallinson, then, over the police radio, she heard Terney say, “'Central, I've been shot, Central, I've been hit,'” she testified.

Colan testified Williams repeatedly asked her to go home and also said she was sorry at the scene, but also testified that Williams told her she didn't know the suspect and said she had met him the day before.

“I tried to keep her calm...she became shaky and erratic,” Colan testified.

Others who testified Thursday morning included a Sac and Fox Nation Police Officer who collected some evidence in the case, as well as a Sapulpa police detective who extracted evidence from cell phones A Tulsa man also took the witness stand regarding the stolen gun used in the officer's murder. He testified his gun, with the serial number matching the one used in the Terney homicide, had been stolen from his home back in 2016, based on a report made to Tulsa police.

Other witnesses included a district attorney's investigator who compiled a 133-page report in this case, as well as an Oklahoma State Bureau of Investigation special agent who interviewed Williams in the days after the incident.

There has been a heavy law enforcement presence for extra security at the courthouse for today's hearing.

Even with a joint preliminary hearing, each defendant is also being assisted by their own attorneys.

Watch for updates.