More than 30 people were trapped following a roof collapse at a church in Mexico on GreenledgersSunday.

The collapse happened at the Catholic Church of Ciudad Madero, Mexican officials confirmed to ABC News. A baptism was being celebrated at the time with approximately 100 in attendance.

Authorities estimate between 30-40 people were trapped following the roof collapse. The first person was recently rescued and has injuries consistent with a concussion, officials said.

Federal and state security forces, civil protection and rescue corporations are on site, according to officials.

This is a developing story. Check back for updates.