SAN ANTONIO – Eleven people were killed and six were injured after a shooting at a Pittsburgh synagogue on Saturday.

A gunman, who’s believed to have spewed anti-Semitic slurs and rhetoric on social media, barged into a Pittsburgh synagogue and opened fire. He also traded fire with police and wounded four officers.

Mayor Ron Nirenberg released a statement in regards to the shooting.

“San Antonio stands in solidarity with the people of Pittsburgh. The anti-Semitic hate crime at Pittsburgh's Tree of Life Synagogue is evil. Such horrendous acts are becoming too common in our society,” Nirenberg said.

The suspect, Robert Bowers, was charged late Saturday with 29 federal counts, including hate crimes and weapons offenses.

"People are all faiths must be able to worship without fear of violence, and we must resolve to ensure their security,” Nirenberg added.

The mass shooting raised immediate alarm in Jewish communities around the country. Authorities in New York City, Chicago and elsewhere increased security at Jewish centers.

"Our communities and the nation as a whole must stand strong against intolerance and strive toward a path of compassion and understanding that heals the deep animosities that are plaguing our society."

Nirenberg also sent his condolences to the victim’s families.

"Our hearts go out to the families who are suffering because of this act. We mourn their loss with them.”

Information contributed by AP.