Student may have made bomb

POLICE probing Finland's worst peacetime bomb attack have found material for making bombs at the home of the only suspect, a chemistry student who was among the seven killed by the blast, investigators said on Sunday.

The National Bureau of Investigation (NBI) said the motive for the devastating explosion at a busy shopping centre on Friday evening, which injured around 80 people and shocked this peaceful Nordic nation, remained a mystery.

"He was likely a skilled bomb maker," NBI Deputy Chief Jari Liukku said. He said the explosives used were unusual and different from those used by the military.