A gunman opened fire inside a Gurdwara in Wisconsin killing six people and critically injuring three others on Sunday morning before he was shot dead, authorities are treating it as an act of domestic terrorism.
The tragic incident took place when members of the Sikh community were gathering in the 17,000 sq ft Gurdwara in Milwaukee's Oak Creek suburb for morning prayers.
The unidentified gunman walked into the Sikh temple where he opened indiscriminate firing, killing seven people. The gunman was also shot and killed by a police officer who also sustained serious injuries.
Police said, there were a large number of women and children and the women were preparing meals to be served after the traditional prayer ceremony.
Oak Creek police chief John Edwards said, the police is "treating the incident as a domestic terrorist-type incident."
The FBI will oversee the criminal investigation. Edwards said, there were "numerous individual deceased" and "multiple injured."
President Barack Obama offered his condolences to the victims of the shooting, and said, his administration will provide whatever support is necessary to the officials who are responding to this tragic shooting and moving forward with an investigation.
"Michelle and I were deeply saddened to learn of the shooting that tragically took so many lives in Wisconsin", Obama said in a statement.
"As we mourn this loss which took place at a house of worship, we are reminded how much our country has been enriched by Sikhs, who are a part of our broader American family," Obama said.
FBI Milwaukee special agent incharge Teresa Carlson said, the agency is working closely with the Oak Creek police department and other local, and federal agencies to investigate the shooting incident.
"While the FBI is investigating whether this matter might be an act of domestic terrorism, no motive has been determined at this time," Carlson said adding that the investigation in still its early stages.