Gunman opens fire at church in Texas; at least two dozen feared dead (UPDATED)

A gunman has opened fire at a church in Texas Sunday afternoon.

Here's what we know so far:

• The shooting happened at the First Baptist Church in Sutherland Springs, Texas, a small town southeast of San Antonio.
• According to Fox News, local officials have confirmed the incident, which they are calling a "mass shooting."
• Local news station KSAT-TV reported that witnesses saw a man walk into the church around 11:30 a.m. and begin shooting.
• KSAT also reported that the shooter is dead.
• Texas Attorney General Ken Paxton told Fox News that 27 people were murdered in the shooting. Multiple reports say that 30 others were injured. That would make Sunday's tragedy the deadliest church shooting in U.S. history.
• Reports on the scene said at least six helicopters flew victims away.
• The FBI and ATF are on the scene assisting local law enforcement with the investigation.
• About 50 people were in the church at the time, meaning half was murdered.
• According to My San Antonio, police are searching the home of the suspected killer for explosives.

Wilson County commissioner Larry Wiley told Fox News: "It is horrible. It appears someone walked in and started shooting."

Many people have noted that today's shooting occurred on the eight-year anniversary of the Ft. Hood shooting, an Islamic terror attack.

This is a breaking news story and will be updated as details become available.

How have officials responded?

President Donald Trump tweeted:

Texas Gov. Greg Abbott (R) tweeted:

Texas Sen. Ted Cruz (R) said:

Here are some photos and video footage from the scene:

This is the scene of the shooting st the church pic.twitter.com/0sf1woffOl

— Max Massey (@MaxMasseyTV) November 5, 2017