One person was killed and two others were injured after a suspected failed terrorist attack in Stockholm Saturday.
A car bomb exploded close to a busy shopping mall in Stockholm.
Police are trying to figure out whether the explosives and two other similar threats coincide with each other, CNN reports.
Police received an e-mail warning 10 minutes before the car bomb went off, Reuters reported. The e-mail had sound files in both Swedish and Arabic.
Terrorists experts believe that attack was not done alone.