CLEVELAND HEIGHTS, Ohio — An employee of Jim Brennan is one of four men facing charges in connection with the fatal shooting of the beloved pub owner, according to police.

Brandon Jones, 23, of Cleveland, worked for Brennan for about a month in the restaurant's kitchen leading up to the shooting and robbery on Monday at Brennan's Colony, a well known bar and restaurant in the Cedar-Lee district, according to Cleveland Heights Police Chief Jeffrey Robertson.

Jones and his brother Darien Jones, 21, and brothers Devon Turner, 26, and Paul Turner, 23, are all charged with aggravated murder and aggravated robbery in Cleveland Heights Municipal Court. Initial appearances will be next week, Robertson said.

Darien Jones is from Garfield Heights, and the other three are from Cleveland. Robertson on Thursday confirmed they are investigating the group as being in a gang, but would not provide specifics. Robertson declined to say if anything was stolen during the incident, or say what roles investigators believe each man had in the shooting.

Brennan, 61, of Gates Mills, was fatally shot about 1 p.m. Monday at his Lee Road restaurant during an attempted robbery, police said.

Robertson said Brandon Jones was the only person who worked at Brennan's Colony among the group. On Wednesday, Robertson said five people were in custody in connection with the investigation. He declined to address what happened to the fifth person on Thursday.

Brennan died from gunshot wounds to the head and extremities, the Cuyahoga County Medical Examiner said.

Police found three bullet casings and a bullet fragment at the bar. The gunmen reportedly fled east on Silsby Road, touching off a manhunt that included help from federal, state and other local law enforcement agencies across the county.

Robertson declined to provide details of their investigation, but said they conducted about six search warrants, which led to substantial evidence.

He said they are continuing to investigate and more charges and arrests could be forthcoming.

"We're not at the bottom yet," Robertson said. "We're still investigating and have a lot of work to do. We've made a lot of progress."

The Turner brothers were wanted by authorities after failing to appear after a felony case lodged against them earlier this year was bound over to county court.

Paul Turner, according to court records, was charged in that case in Cleveland Municipal Court along with another man identified as Devonne P. Turner.

Cleveland Heights officials did not provide more information on the alternate spelling. The birth dates and addresses for the suspect in Cleveland Municipal Court and Cleveland Heights Municipal Court match. And they also match the address listed for Paul Turner, according to court records.

The Turners were indicted by a county grand jury on charges of aggravated robbery, attempted felonious assault, kidnapping and animal cruelty.

Court records say the duo beat and kicked a man on April 16 in the 3700 block of Walton Avenue in Cleveland. The duo knocked him to the ground and stole the man's wallet, court records say.

A capias was issued for both men after they failed to appear at their scheduled arraignment on June 4, according to county court records.

Paul Turner was also convicted in 2010 of attempted receiving stolen property and failing to comply with a police officer's order and sentenced to 18 months in prison. He was sentenced to two years on probation in 2009 after pleading guilty to burglary and attempted receiving stolen property.