Police say at least seven people, including a gunman, were killed in a shooting at a Sikh temple near Milwaukee Sunday.

The shooting at the Sikh Temple of Wisconsin in the suburb of Oak Creek took place just after 10:00 a.m. on Sunday morning, when several dozen people were gathering for a service.

Greenfield Police Chief Bradley Wentlandt said four people were found dead inside the temple and three others, including the suspected shooter, were found dead outside.

A police SWAT team entered the building before noon and brought uninjured people out of the building at 7512 S. Howell Ave.

Among those who were shot was the president of the temple, the Journal Sentinel reported.

There were some reports that children were taken to the building’s basement after shots were fired. A text message sent to a Journal Sentinel reporter shortly before noon said that there were two shooters with children possibly as hostages.

A police SWAT team entered the building before noon, and escorted uninjured people out of the building and away from the shooting scene. The paper said there could be as many as 30 victims.

One of the temple’s committee members, Ven Boba Ri, told the Journal Sentinel that based on communication with people inside the temple, the shooter was a white male in his 30s.