At least two people were killed and nine more wounded in a shooting Saturday afternoon in a building on the campus of Brown University in Rhode Island, authorities said. The suspect is still at large. 

Authorities said that the shooting was reported in the Barus & Holley engineering building a little after 4 p.m. local time. The shooting occurred in a first-floor classroom, Providence Deputy Police Chief Tim O'Hara told reporters. The school said that final exams were taking place in the building at the time of the shooting.   

Providence Mayor Brett Smiley said in a news conference that at least two people were killed and eight more taken to Rhode Island Hospital in "critical but stable" condition. The hospital later said in a statement that six of the patients were in "critical but stable condition," one was in critical condition, and another was in stable condition. 

In a follow-up news conference late Saturday night, Smiley said that a ninth victim suffered non-life threatening injuries when they "learned that they had received fragments from a shooting that had occurred near them."

That victim did not sustain a gunshot wound and is expected to make a fully recovery, Smiley said. 

Brown University President Christina H. Paxson told reporters in the second news briefing that the two people killed and the nine others injured were all students. 

Smiley said that no arrests had been made, and a shelter-in-place was in place for the Brown University area. No weapons have been recovered, O'Hara said. A university alert told students to lock doors, silence phones and stay hidden until further notice.   

O'Hara told reporters the suspect was only described as a male dressed in black and he escaped from the engineering building following the shooting. It was unclear how he had entered the building, officials said, but Smiley noted that the outer doors of Barus & Holley were unlocked because exams were taking place.

During the second news conference, officials disclosed that there was security video of a person believed to be the suspect leaving Barus & Holley. In the video, the suspect was wearing dark gray or black clothing and his face was not visible, O'Hara said, but the video does not show a firearm. 

"Some of the witnesses also told us that he may have been wearing a camouflage gray mask," O'Hara added. 

Police are unsure if there is video showing the suspect inside the Barus & Holley building, O'Hara also added. 

Officials cleared the building but did not find the suspect, and no weapon has been recovered.

"If you live on or near Brown's campus, we are urging you to stay home and stay inside," Smiley said. 

School public safety had initially reported that a suspect had been taken into custody before retracting that statement. 

"There was an individual who was preliminary thought to be involved, but was later determined to have no involvement," Smiley told reporters. 

Over 400 local and federal law enforcement officers are in the area assisting in the investigation, Smiley said.   

President Trump wrote in a Truth Social post that he had been briefed on the shooting. 

"God bless the victims and the families of the victims!" Mr. Trump said. The president also initially wrote that a suspect was in custody, but in a follow-up post, wrote, "The Brown University Police reversed their previous statement — The suspect is NOT in custody."

"The unthinkable has happened," Rhode Island Gov. Dan McKee told reporters. McKee said he had spoken by phone to Mr. Trump and FBI Director Kash Patel.     

The FBI confirmed in a statement to CBS News that it was assisting "our law enforcement partners in Rhode Island with any and all available resources." 

The Bureau of Alcohol, Tobacco, Firearms and Explosives also posted on X that it was sending agents to the school.