Reward offered for supermarket bomber tip

The police have offered a 10 thousand euro reward for the tip that leads to the arrest of the suspect who has been extorting the Jumbo supermarket chain. The suspect has planted explosives at several Jumbo branches in Groningen and Zwolle and is demanding an amount in Bitcoins to stop. About three weeks ago the police explicitly asked for the public's help in solving this case. They released a large amount of information from the case file. By last week the police had already received 465 tips and questions regarding the extortionist, but so far none of these have led to an arrest. The police believe the extortionist to be a man between the ages of 20 and 40 years with knowledge of explosives, computers and electronics. They also suspect he lives in or around Groningen.