A suicide bomber exploded a truck at a police station in Russia's North Caucasus on Monday, killing at least 18 people and wounding about 60 others, officials said. The attacker rammed the gates of the Nazran city police headquarters, in Ingushetia province, and detonated his explosives as police officers were lining up for a morning check, Ingushetia's deputy interior minister Dzyaudin Dzortov said. Police had fired shots at the truck, but failed to stop it, he said. The blast triggered a fire that raged for hours, destroying a weapons room where ammunition detonated. A nearby apartment building and several office buildings were also damaged, and burned-out cars littered the street, The Associated Press reported. At least 18 people were killed and about 60 were wounded, Dzortov said, adding that the death toll would likely rise.