Two suspects arrested for allegedly aiding escape of the gunmen who killed a well-known businessman in Punjab’s Abohar town Monday were shot dead in an encounter while in custody Tuesday.Police said detainees Jaspreet Singh and Ram Rattan were taken to a wooded area for recovery of the pistols used in the murder but they turned a gun on the escort party and were killed in retaliatory firing. A constable, Maninder Singh, was shot in the shoulder and has been admitted to a hospital.The search continues for the three men who shot Sanjay Verma outside his showroom Monday. After killing Verma, the trio fled on a bike, abandoned it after a while, and hopped into a white hatchback, said police, adding Jaspreet and Ram Rattan had facilitated this leg of their escape.