Police spent hours searching city hall, after the Mayor's brother Councillor Doug Ford and Deputy Mayor Norm Kelly received a threat, demanding the Fords leave office or the building will blow up.
But police did not find any explosives.
Uniformed officers and Ace, the dog representing the force's K9 unit, went in and out of cubicles and offices sniffing every corner.
Isp. Frank Barredo of Toronto Police says they're still investigating. Just moments earlier, the Mayor rushed out of his office, thanking officers for doing a good job.
Rob Ford would not comment as to why he still held meetings in his office or took pictures with residents after making the threat public.
Earlierin the day, Ford said a bomb threat was received on Monday.
It reads, "He [Mayor Ford] has 12 hours to vacate or else City Hall will blow. I have already set up explosives around."
Ford told reporters, "We are carrying on... I have meetings and I've got calls to return...and I'm going to continue doing that."
At no time was city hall evacuated.