Dec. 19 (UPI) -- Three people were killed and at least five more were injured in a knife attack in Taipei on Friday.

A 27-year-old suspect ignited smoke bombs and Molotov cocktails at Taipei's main metro station, then ran to a nearby shopping district station, stabbing multiple people, according to Premier Cho Jung-tai.

Cho stated that the suspect fell from a building and later died. The motive is still unknown.

The attack took place during Taipei's evening rush hour, in the station that linked to a crowded underground shopping area.

Taiwanese President William Lai pledged a rapid investigation.