A suspected suicide bomber triggered explosives at Moscow's busiest international airport today killing at least 35 people and leaving 130 injured,in the first major terror attack in less than a year. "From the preliminary information we have,it was a terror attack," President Dmitry Medvedev told officials in a televised briefing,shortly after cancelling his visit to Davos for the World Economic Forum meeting. According to eyewitnesses quoted by Rossiya 24 news channel,two blasts were heard in the international arrivals sector of the Domodedovo international airport,40 kms south-east of city centre. At least 35 people were killed and over 100 injured in the attack at the airport,the report said. RIA Novosti said there was at least one suicide bomber with explosives with five kilo TNT equivalent. Investigation Committee spokesman Vladimir Markin said the power of the blast was between 5-10 kg equivalent of TNT. The bomb went off at 1902 IST in the baggage claim area of the international arrival sector,Itar-Tass quoted Tatyana Morozova of the Russian investigation committee as saying. Interfax did not rule out that the explosives were in a suitcase. TV images showed people covered in blood running for safety amid chaos and thick smoke. The suicide bomber with metal pieces filled explosive vest was in the thick crowd of people receiving the arriving passengers,Russian media said. Those at the airport said the terminal was packed to capacity at the time of explosion. Airport employees broke down the wall between the main airport and the arrival zone to allow passengers to escape from the scene of the destruction,it said. According to Business FM radio it was a suicide attack. "According to preliminary information,the explosive device was set off by a suicide bomber in the international departures hall," the Interfax news agency quoted an unnamed security source as saying. Passengers from about 2 dozen international flight including from New York,Dubai,Asghabat,Cairo,London,Vienna,Munich,Hamburg,Tokyo and Istanbul were around the area of the explosion that was not far from one of the restaurants. Eyewitnesses said blood was splattered around and the injured,many with severe wounds,were seen running for safety. Domodedovo airport is Russia's largest airhub in terms of passenger travel. Medevedev ordered that security be increased at all ofthe country's airports and transportation hubs after the incident. Last March,the Russian capital's underground subway system was rocked by two female suicide bombers from Russia's restive Dagestan region,who detonated their explosives on busy metro system during rush hour,killing 40 people injuring more than 80.