Police have issued an arrest warrant for the suspect in a mass shooting at Brown University that killed two people and injured nine others, sources close to the investigation told the BBC's US partner, CBS News.
Authorities are now searching for the individual and a rental car believed to be linked to the suspect. The identity of the suspect has not been released.
Investigators are also looking into a potential connection between the Brown University shooting and the killing of a Massachusetts Institute of Technology (MIT) professor two days later.
The sixth day of the investigation includes door-to-door inquiries, requests for home-security videos, and appeals for tips from the public to track down the gunman.
Earlier this Thursday, a news conference that police had scheduled in Providence was abruptly cancelled, with expectations to provide an update later.
Police confirmed sources that they were investigating possible connections between the Brown shooting and the homicide of Nuno F Gomes Loureiro, a 47-year-old professor, who was shot multiple times at his Brookline home, about 50 miles from Providence.
A rental car matching the description of one seen at both crime scenes has been identified, prompting federal authorities to previously assert that there was no relationship between the two incidents.
On Wednesday, authorities shared a photo of an individual believed to be close to their primary suspect and indicated they wanted to speak with this individual about potentially relevant information.
Providence Police Chief Oscar Perez stated, The killer could be anywhere, emphasizing uncertainty regarding the suspect's whereabouts.
A video released the day before showed a person of interest near the university campus who was seen wearing a black mask, potentially surveilling the area prior to the incident.
Public concerns have been vocal as they feel progress in the mass shooting investigation has been slow, leading Rhode Island Attorney General Peter Neronha to comment that he is confident the suspect will be caught soon.
The FBI has offered a $50,000 reward for information leading to the identification, arrest, and conviction of the individual responsible for this tragic attack.
The shooting occurred in the Barus & Holley engineering building during final exam periods, claiming the lives of two students identified as Ella Cook from Alabama and Mukhammad Aziz Umurzokov, an Uzbek-American freshman.
