Authorities say a man apparently took hostages Saturday during services at a synagogue near Fort Worth, Texas.

The Colleyville Police Department tweeted Saturday afternoon that it was conducting SWAT operations at the address of Congregation Beth Israel.

The services were being livestreamed on the synagogue's Facebook page for a time, and the Fort Worth Star-Telegram reported that apparent negotiations could be heard between the alleged hostage taker and police. The paper reported that an angry man could be heard ranting and talking about religion at times during the livestream, which didn't show what was happening inside the synagogue.

Shortly before 2 p.m., the man said, "You got to do something. I don't want to see this guy dead." Moments later, the feed cut out.

"The situation at the 6100 block of Pleasant Run Road posted about earlier remains ongoing. We ask that you continue to avoid the area. We will continue to provide updates via social media," the force said on Twitter.

It wasn't clear how many people were in the building in Colleyville, a community of about 26,000 people 15 miles (23 kilometers) northeast of Fort Worth.