A gunman opened fire at a church in Texas on Sunday morning, killing two people with a shotgun before a member of the church’s volunteer security team fatally shot him, the authorities said.

About 250 people were inside the auditorium of the West Freeway Church of Christ in White Settlement, near Fort Worth, when the gunman began shooting just before communion, said Jack Cummings, a minister at the church.

A man pulled out a shotgun inside a North Texas church on Sunday and opened fire, killing two people, authorities said. It could have been far worse.

Two congregants, both volunteer members of the church's security team, drew their weapons and confronted the gunman, fatally shooting him and saving an "untold number of lives" at West Freeway Church of Christ in White Settlement, a town of about 17,000 people near Fort Worth.

The gunman who pulled out a shotgun during a church service in Texas on Sunday and opened fire on worshipers appeared to be in disguise when he entered the sanctuary, according to a woman who said he made her feel uncomfortable when he sat feet away from her.

Two men were killed when the gunman opened fire at West Freeway Church of Christ in White Settlement, as more than 240 parishioners were inside. Within seconds, he was shot to death by two congregants who fired back.