Dagestan's President Magomedsalam Magomedov arrived in the N. Caucasus blast-hit city of Buinaksk, spokesman for Dagestan's government said.

Early on Sunday a Zhiguli car packed with explosives and driven by a suicide bomber detonated near the town of Buinaksk after ramming the gates of a military unit. At least five people were killed and over 30 injured in the attack.

Later, a second bomb exploded in Buinaksk on the way of police officers heading to the site of the first blast.

"Dagestan's head is currently at the scene. He will visit those injured in hospitals," the spokesman said.

Russian Defense Minister Anatoly Serdyukov has ordered additional measures to enchase antiterrorist security of military objects in the Southern Military District of Russia, official spokesman for the Ministry, Col. Aleksei Kuznetsov said.

Russia's North Caucasus republics, in particular Chechnya, Dagestan and Ingushetia, have seen frequent attacks on police and officials despite the end of a decade-long special regime for counterterrorism operations in Chechnya the last years.

On Saturday, an attempt on Dagestan's Minister of National Policy, Foreign Relations and Information Bekmurza Bekmurzayev was committed. Bekmurzayev's car exploded when he was on his way to work at the capital of Makhachkala. The minister survived the attempt on his life, but his driver died.

MOSCOW, September 5 (RIA Novosti)