A series of dawn bomb blasts in the Iraqi capital has left around 60 dead and up to 150 injured. A suicide bomber lured labourers to a vehicle, promising them work, before detonating up to 200 kilos of explosives. The workers came like bees to honey, said one security source. It is a deadly method that has been used several times before. The blasts occurred in the Tayran Square area of central Baghdad, a shiite-dominated part of the city. It is the fourth major attack there this year. The initial explosion was followed by gunfire and two further blasts. It is the latest revenge killing between majority Shiites on one hand and minority Sunnis who were once dominant under Saddam Hussein.