BLOOMINGTON, Minn. - Bloomington police say preliminary investigation indicates a "destructive device" is to blame for an explosion at an Islamic center Saturday.

Police say no one was injured in the blast at Dar Al-farooq Islamic Center at about 5:05 a.m.

The explosion went off inside an office just before first prayer, according to Bloomington police. Members of the center say there were people inside the building at the time.

Police say there is some damage to the building, including a broken window on the outside. They say it's not clear whether the explosive was thrown through the window, or the explosion caused the window to break.

Bloomington police are not sure whether an explosive was thrown through a window at the Dar Al-farooq mosque, or the explosion caused the window to break.

Bloomington police confirmed in a tweet Saturday at 1:30 p.m. that the explosion was caused by "a destructive device in violation of federal law."

There are currently no suspects in custody, and Bloomington police have handed the investigation over to the FBI Minneapolis Field Office.

Anyone with information is asked to contact the FBI at 1-800-CALL-FBI, using option #1.

Bloomington police say the FBI will continue to work closely with them, as well as with the Bureau of Alcohol, Tobacco, Firearms and Explosives, and other partners.

Several people from other local faith groups spoke at a press conference Saturday at noon to show their support for Dar Al-farooq.

"An attack on a mosque is an attack on a synagogue is an attack on a church," said Curtiss Deyoung, CEO of the Minnesota Council of Churches. "It's an attack on all faith communities. And so we stand with you, a million Protestants in Minnesota."

Hamdy El-Sawaf, president of the Islamic Community Center of Minnesota board, also gave a message of unity among religious groups.

"We gather together today hands in hands and shoulder to shoulder to give a very clear and precise message,” he said. “We’re not only the Muslims who do have this message, but it is Muslims, Christians, Jews, people of faith all over, we believe that the values of our religion (are) totally, absolutely against what happened today."

Dar Al-farooq's executive director, Mohamed Omar, said a congregation member witnessed a truck fleeing at a high speed immediately after the blast.

The Muslim American Society of Minnesota is offering a $10,000 reward for information leading to the arrest and conviction of those responsible.

The Bloomington bomb squad, along with federal authorities, responded to a blast at the Dar Al-farooq Islamic Center in Bloomington Saturday morning.
Police are investigating an explosion that occurred at Dar Al-Farooq Islamic Center in Bloomington Saturday morning.