Adams made the comment during the annual press briefing about security plans for the the parade.
The city, he said, has been on heightened alert since October 7.
Hochul confirmed that two people, including the driver of the vehicle, were killed in the explosion.
Canadian police cars at the Rainbow Bridge border crossing todayUSMAN KHAN/AFP via Getty Images
The parade kicks off tomorrow at 8:30 a.m.
ET and will be broadcast on NBC and stream on Peacock.
