Three suspects shot and killed at least 14 people and wounded more than 17 in San Bernardino, California, on Wednesday, according to police.

Three people were potentially involved in the shooting, San Bernardino Police Chief Jarrod Burguan said at a press conference. Two suspects — one man, one woman — were killed during a shootout with police after a manhunt. Another suspect was detained. It’s unclear if he was involved in the shooting.

San Bernardino police identified two suspects as Syed Farook, 28, and Tashfeen Malik, 27, who were in a relationship together. According to some, Farook was an employee of the San Bernardino County Department of Public Health, which rented a conference room at the social services center in which the shooting took place on Wednesday.

The shooting began around 11 am local time, according to police. Over several minutes, up to three shooters opened fire at the Inland Regional Center. The suspects then fled from the scene in a dark-colored SUV.

San Bernardino

Around 3 pm local time, just hours after the shooting at the center, police pursued a tip and reportedly spotted an SUV in the area that matched the description of the suspects’ vehicle. Police and the suspects, who Burguan said were dressed in “assault-style clothing,” exchanged gunfire. One officer was wounded, and two suspects were killed. Police apprehended another suspect who attempted to flee the area, but it’s not clear if he was involved in the shooting.

As of 10:20 pm, police reported a potential explosive device in the area that a bomb squad was disposed off.

Marybeth Feild, president and CEO of the Inland Regional Center, told the Associated Press that the initial shooting took place at a conference room at the center, which was rented out by the San Bernardino County Department of Public Health for a banquet.

Federal law enforcement officials told the Los Angeles Times that they believe one man angrily left the banquet, potentially returned with one or two people, and opened fire. Federal officials also reportedly said it’s possible the man was at the event to verify a particular person was there. But all of this information is currently unconfirmed.

The shooting took place at the Inland Regional Center, according to police. As part of the California Department of Developmental Services, the center offers all sorts of services to people with developmental disabilities such as autism, cerebral palsy, and epilepsy. Nearly 670 staff members serve more than 30,000 clients of all ages, from newborn to the elderly, in the region.

It remains unclear who the shooters were targeting.