Medvedev was quoted by several Russian news agencies saying that the management of Domodedovo Airport should be held responsible for the attack because of insufficient security measures.

"What happened at Domodedovo shows the airport lacked security," Medvedev said in a CNN report. "It's unbelievable that such a huge amount of explosives were brought into the terminal. Those officials responsible for security at Domodedovo must be punished for their decisions. This is a terror attack, a grief, a tragedy."

The blast occurred around 4:30 p.m. at the entrance of the international arrivals section.

The Russian Ministry of Emergency Situations said that there were 110 wounded people still in hospitals. According to the report,35 people died and 152 were wounded in the explosion.

Domodedovo is 14 miles southeast of Moscow. According to the airport's website, it is the largest of Moscow's three airports, as well as the busiest in terms of passenger traffic.

It was still not immediately clear who was responsible for Monday's blast, the report said, although previous terror attacks in Russia have been blamed on militants from the North Caucasus region.