UPDATE 12:40 a.m.: Niagara Regional Police say there were two suspects involved in the attack instead of four. Police also now say the third victim was not shot with a pellet gun, but injured in a struggle. This story has been updated.

UPDATE 12:46 a.m. Niagara Regional Police have released descriptions of the suspects.

Three students were wounded at a student residence on Brock University's campus Thursday night in what Niagara Regional Police describe as a targeted attack.

Two people were stabbed and a third hurt in the ensuing struggle around 8 p.m. in the Village — a cluster of on-campus residences — and police say two unknown persons were seen fleeing from the area in a vehicle shortly afterwards.

Const. Phil Gavin said late Thursday night the suspects are believed to be in their 20s and are "possibly East Indian." One of them was wearing dark clothing, while the other was wearing lighting clothes and grey pants.

Gavin said police responded to a 911 call about a shooting on campus, and the incident was "alarming" and immediately treated as a high priority.

When police and paramedics arrived they found the stabbing victims and third injured. Gavin said the three injured people had non-life threatening injuries and were taken to a hospital. All three students are males in their 20s and have been released from hospital .

St. Catharines detectives, uniformed officers and the NRP canine unit all responded to the call but were unable to locate the suspects. The weapons used have not been recovered by police. Gavin said police believe a pellet gun was used in the attack, but no one was shot with it.

He did not immediately know if the incident happened inside the residences, although some students said they saw at least two people being taken from the building on stretchers to an ambulance.

Although police believe the attack was targeted, Gavin said Thursday night it was premature for him to disclose why police believe that to be the case.

Brock University president Gervan Fearon said late Thursday that police assured him the incident is "isolated" and have confirmed the campus is safe.

Shortly after the incident misinformation spread quickly across social media with reports of an active shooter — meaning a gunman was on campus shooting people — and that the university was on lockdown.

While the residential area where the attack happened was blocked off by police, the campus was never locked down, said university spokesman Dan Dakin.

Gavin said after the attack, the threat to campus ended as the suspects fled.

Dakin said Brock has means to broadcast messages to students in the event of an emergency, including mass emails and a campus security phone app. He could not say Thursday evening if either method was used to inform students about the attack.

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Dakin and Fearon said students temporarily displaced from their residence during the police investigation will be housed in other quarters on campus, although the university was still trying to determine how many students were impacted Thursday evening.

Counselling services are also be made available to students who request it, they said.