A man was killed after an altercation that turned into a deadly shooting between him and another man, who had a permit to carry a concealed weapon, during a service at a Pennsylvania church.

Robert Braxton, 27, was shot in the chest during a 'disturbance after an altercation' between him and another church member got out of hand at the Keystone Fellowship Church in Montgomery County, Pennsylvania, Sunday morning, according to NBC.

The shooting happened during an 11am service at the church. Braxton was rushed to a local hospital where he later died, according to the county's District Attorney Kevin Steele.

Robert Braxton, 27, was shot in the chest during a 'disturbance after an altercation' between him and another church member got out of hand at the Keystone Fellowship Church (pictured) in Pennsylvania

The shooter, who has not been identified, had a permit to carry a concealed weapon, which was believed to be a semi-automatic handgun, according to authorities (pictured)

Steele told NBC that the suspected shooter has not been charged at this point but he's cooperating with authorities as they work to determine if the shooting 'was fired under the law'.

The shooter, who has not been identified, had a permit to carry a concealed weapon, which was believed to be a semi-automatic handgun, Steele said.

Authorities said witnesses are still being interviewed and an autopsy is scheduled for Monday.

The church released a statement on their Facebook page shortly after the incident confirming a shooting has occurred at their place of worship.

'We at Keystone are saddened to confirm that a shooting took place at our Montgomeryville campus this morning.

'One man was shot and another is being questioned by police; no one was else was hurt.

'Police and medical personnel were called immediately. Police are investigating. Our congregation is in prayer for everyone involved.'

Investigators are unsure what brought on the altercation between the church members and the relationship between the two is unclear.

Hundreds of people were at the Keystone Fellowship Church service when the shooting occurred.