A 42-year-old man, facing criminal cases, today allegedly killed a police official in a gruesome manner, suspecting that the latter was responsible for his arrests in the past. Both the victim Shivaji Shinde (45), a head constable at the local crime branch, and accused Pulja Singh Thakur lived in Datta Nagar area under Shivaji Nagar police station limits, a senior police official said. Earlier, four cases were registered against Thakur at various police stations. According to the officer, Thakur, who was out on bail, was suspicious that Shinde was responsible for his arrests in the past. This morning Shinde had gone to a laundry shop where Thakur came after which the two had heated arguments. The arguments took a nasty turn, when Thakur picked up a stone lying nearby and hit Shinde's head multiple times, the officer said. Shinde was killed on the spot. A case under section 302 (murder) of the Indian Penal Code was registered and efforts are on to apprehend the accused, the officer added.