A series of attacks against police hit the Russian North Caucasus region of Dagestan on Thursday, killing several officers and injuring dozens more, authorities said.
An unidentified person set off a bomb equivalent to about 3 kilograms (more than 6 pounds) of TNT shortly after midnight near the police headquarters in the regional capital of Makhachkala.
No one was hurt, the local police department reported on its website.
Fifteen minutes later, when investigators arrived at the scene, a more powerful car bomb went off, killing a police officer. It injured 39 people, including 32 officers, police said.
Dagestan police said on its website that the second bomb had the power of 35-40 kilograms of TNT.
The Russian Interior Ministry reported on its website that the blast killed one police officer and injured 60 people, including 44 officers. more