The Latest: Police think 1 suspect planted subway bombs

ST. PETERSBURG, Russia (AP) — The Latest on the explosion on a train in the Russian city of St. Petersburg (all times local):
11:55 p.m.
The Interfax news agency says Russian police think a man they suspect of blowing himself up to attack a St. Petersburg subway train had links to radical Islamists.
The agency cited an unidentified law enforcement official saying that investigators believe the suspect carried an explosive device onto the train in a rucksack.
Interfax says evidence found at