MOSCOW, Russia (CNN) -- Four policemen were killed by a suicide bomber Tuesday in southern Chechnya, the office of the Chechen president said.
"At about 11 a.m. (3 a.m. ET) a man walked to a police SUV as it parked at a car service station and detonated an explosive device he was carrying," the president's office said.
Three of the policemen died instantly and a fourth was wounded. That officer died later at the hospital, the Chechen Interior Ministry told CNN.
The bombing took place in the small village of Mesker-Yurt, 30 kilometers (18 miles) south of the republic's capital, Grozny.
Interior Minister Ruslan Alkhanov was quoted by Russian news agencies as saying that police had already identified the bomber in the wake of the attack.
"He is Magomed Shakhidov, a 25-year-old former rebel who was jailed in 2004, and then joined the rebels again after being released from prison," the minister said.
Last week, two suicide bombers on bicycles killed four policemen and wounded another three in the streets of Grozny. That was the first time bicycles had been used in suicide bombing attacks in the restive Russian province.