Police received the first report of a stabbing on the James Smith Cree Nation at 5:40 a.m. local time (6:30 a.m. ET) Sunday morning, and within minutes several other calls came in reporting other stabbings throughout the community, police said. Within hours, the situation escalated into a mass stabbing with at least 25 victims, 10 of whom died, police said. Three helicopters from STARS Air Ambulance were dispatched to the James Smith Cree Nation during the attack, company spokesman Mark Oddan told CNN. The first crew to arrive triaged the victims, and the second aircraft brought a medic to help triage and lead the emergency response, he said. Helicopter crews took some victims to Royal University Hospital in Saskatoon, and several other patients were taken to local hospitals by ground ambulances, Odan said. He was unable to provide details about the patients or their conditions. Multiple dangerous person alerts were issued by police throughout the morning, extending across the province of Saskatchewan and into neighboring Manitoba and Alberta. Canadian Public Safety Minister Marco Mendicino asked residents to take shelter. “To everyone in Saskatchewan, especially those near the James Smith Cree First Nation area, please evacuate and stay safe,” he tweeted. Authorities have located 13 separate scenes where the attacks took place. There may be other victims who were injured and taken to the hospital, police said, urging potential victims to contact law enforcement. “Our thoughts are with the many victims who died and were injured, their family, friends and community. It’s appalling what happened today in our province,” said Royal Canadian Mounted Police Assistant Commissioner Rhonda Blackmore. This is where the Saskatchewan attack took place: