The search for a gunman who opened fire at Brown University on Saturday, killing two students and injuring nine others, continued on Tuesday.

The Providence Police Department in Rhode Island released a new photo of a “person of interest” on Tuesday and is asking for the public’s help in identifying the person dressed in dark clothing and wearing a black mask and hat. A person of interest detained earlier in connection with the attack was cleared. Officials in Rhode Island are expected to give an update to the public at 5 p.m. ET on Tuesday, CNN reports.

The FBI’s Boston field office on Monday also released photos of a “person of interest.” The suspect, according to the FBI, “is described as a male, approximately 5’8” with a stocky build.”

The FBI is also offering a $50,000 reward for information that will lead to the identification, arrest and conviction of the university shooter. Anyone with information is urged to contact the FBI at 1-800-CALL-FBI.

“Our agents and analysts remain fully embedded with our law enforcement partners,” FBI Boston wrote on social media. “We are working together to track down leads, canvass neighborhoods, and develop intelligence. Our Evidence Response Team remains on campus processing the scene and our Lab at Quantico has sent personnel to assist in documenting the trajectory of the bullets.”

The shooting happened Saturday afternoon in a physics and engineering building where students were attending a final exam review for an economics class, Brown University president Christina Paxson said on Sunday, according to the New York Times. The university issued an active shooter alert, advising students and faculty members to secure their doors and remain out of sight.

The two Brown University students fatally shot in Saturday’s attack were identified as Mukhammad Aziz Umurzokov, 18, from Uzbekistan, and Ella Cook, 19, from Alabama.

"These were two young people whose amazing promise was extinguished too soon," Paxson wrote in a letter to the university community on Tuesday.

“Both were brilliant and beloved — as members of our campus community, but even more by their friends and families. Our hearts continue to be with them in their profound sorrow.”

Alabama Gov. Kay Ivey has ordered flags in the state to be flown at half-staff until sunset on Friday in honor of Cook. “As all of Alabama wraps our arms around Ella’s family in prayer, I also join in mourning her loss,” Ivey shared in a post on X.

The Ivy League university said it has canceled final exams and classes for the remainder of the fall semester.