Police investigating a blast that rocked the northern Athenian suburb of Ano Liosia early yesterday believe the incident to be linked to a struggle between rival gangs for the control of the contraband cigarette trade, sources indicated yesterday. The blast occurred around 4 a.m. when a batch of dynamite was detonated outside the entrance of a detached home. It blew out neighbors’ windows and caused damage to the property and parked cars, but no injuries. A police source quoted by the Athens-Macedonian News Agency said the house belongs to a 70-year-old man who was released from prison in Germany about a year-and-ahalf ago, where he had been sentenced for illegal tobacco smuggling. After police arrived at the scene of the blast they questioned a security guard – a relation of the owner – who claimed that he did not see the perpetrators, and found that the power had been cut, immobilizing the security camera. The 70-year-old was not at home when investigators sought him for questioning.