A false bomb scare sent police and bomb-sniffing dogs into subway stations across Toronto Thursday, exactly one week after failed bombings on London's underground train network.

Police found nothing suspicious after shutting down parts of two subway lines for about an hour, sending approximately 60,000 commuters into the streets and onto crowded buses.

Authorities searched 18 stations that run through the city's core and declared them safe, according to Marilyn Bolton of the Toronto Transit Commission.

The threat originated when police and local media received a phone call warning that a bomb would be detonated on a train at 10:30 a.m.