Police testified yesterday about how an accused killer escaped arrest days after the double murder of Haile Outerbridge and Ricco Furbert, and how ammunition was subsequently found in his home.

Christoph Duerr, 26, from Sandys, and Le-Veck Roberts, 21, from Warwick, are charged with the premeditated murders of both men, who were shot dead inside Belvin’s Variety on the evening of January 23, 2013.

Mr Roberts is also charged with attempting to kill Zico Majors on January 16, 2013, in the Khyber Heights area of Warwick; taking a vehicle without consent on the same day; and taking a vehicle without lawful authority on the day of the murders.

Prosecutors allege that Mr Roberts was the gunman in both shootings, while Mr Duerr is believed to have stored and supplied the weapon used.

On Wednesday, the court heard evidence from a former girlfriend of Mr Duerr, who testified that he had shown her two firearms stashed beneath his mattress. She testified that on the morning of January 28, 2013, she messaged a Police officer friend about the incident and sent him photographs of the weapons taken while Mr Duerr was in the bathroom.

Not long after, she said Mr Duerr’s sister told them that Police were surrounding the building. Mr Duerr pulled the firearms from beneath his bed and ran into the attic, talking to a friend identified as “Mono” on his phone.

He later ran out of the apartment through a sliding-glass door at the rear of the building.

The trial continued yesterday with a string of Police witnesses taking the stand, including Pc Kemar Peters, who received the photographs sent by Mr Duerr’s girlfriend.

He told the court that he knew Mr Duerr because they had both been involved in athletics when younger. He also said that he knew “Mono” to be Ramono Mills, and that both he and Mr Duerr lived in the Boaz Island area.

Pc Peters said that once he received the images from the girlfriend, he passed them on to his superior.

Pc Junior Warner told the court that at about 10.45am that day, he was one of several armed officers sent to Mr Duerr’s residence on Seawall Drive, Sandys.

After arriving at the building, he told the court that he went to the rear of the building where he could see a sliding door.

About 20 or 30 minutes after he arrived, he said he heard a loud clap coming from the door and saw a young, slim man with blonde hair at the door wearing a dark jacket and pants.

Upon seeing the man, he identified himself as an armed officer and ordered him to stop, but the man jumped over a fence and began to run towards a wooded area near Woody’s restaurant. Pc Warner said he chased the suspect for a minute or two, but eventually lost sight of him.

Police sergeant Andrew Smalling testified that he was also near the rear of the building, although he could not see the sliding door. He told the court that he heard Pc Warner shout and saw a suspect jump over a fence.

Sgt Smalling said he chased after the suspect and saw the man reach into his jacket with his hand. As he did so, an object fell out and on to the path.

He later identified the object as a navy blue sock, which was found to contain a single round of live ammunition.

The court then heard evidence from Detective Constable Warren Bundy, who came to the residence that afternoon and searched what he believed to be Mr Duerr’s bedroom.

During the search, he said he discovered a white plastic bag hidden in the lining of a box-spring mattress.

“I took the bag and put it on the top of the dresser and I opened it,” he said. “I saw the bag contained some paper towel; Scott towel. Inside the Scott towel were seven live rounds of ammunition.”

He told the court that after leaving the property, he was involved in another search at the nearby residence of Mr Mills, where he seized two cell phones.

The jury also heard that on the evening of January 29 defence lawyer Larry Mussenden, who represents Mr Duerr, attended the Southampton Police Station to discuss his client turning himself in. He left, returning at 8.10pm with Mr Duerr, who was subsequently arrested on suspicion of possessing a firearm.

The trial continues.