The Canadian province of Ontario on Sunday apologized for wrongly raising the alarm about an incident at a massive nuclear power station near
Toronto and blamed a training exercise mistake.
At around 7:30 a.m. ET (1230 GMT) cell phone users across Ontario - the most populous of Canada's 10 provinces - received an alert about the supposed incident.
Less than an hour later the Ontario Power Generation (OPG) authority said the message had been a mistake.