It happened around 9 a.m. ET on a bus travelling between Derry Road and Brittania Road in Milton, Ont.
The suspect is now in police custody. It's unclear whether he posed a serious threat.
Ed: - This part I find very disturbing (from the Toronto Star): Ontario Provincial Police officers advised the driver to lock the doors of the bus and keep everyone inside until they could arrive.
UPDATE: Hamilton man charged with mischief after making bomb threat on GO bus. No bomb found https://t.co/mjX8kWcmLB pic.twitter.com/pI6WDKhe0y— CityNews Toronto (@CityNews) June 12, 2016
Man charged with mischief after Go Transit bus incident. Report of an explosive was unfounded-Media release attached pic.twitter.com/ZCpg1ZZomt— Sgt Kerry Schmidt (@OPP_HSD) June 12, 2016