The police arrested a contract killer who claimed to a member of the Jaggu Pehlwan gang along with his two associates. The arrested person has been allegedly involved in more than 100 contract killings in Delhi-NCR and Western UP.Earlier, on July 29, the police had arrested three contract killers who had come to Noida to murder a builder.A senior police official said the accused has been identified as Joginder alias Joga, involved in 12 contract killings and other cases including loot and kidnapping. His two associates, Mintu and Upender, had recently joined him and even they are wanted in several murders, loot and kidnapping cases."The criminals were active in Western UP and were spreading their activities in Delhi-NCR. They had killed a businessman Jagvir in Ashok Nagar in Delhi earlier," a senior police official said. "The police got a tip-off that the accused would come to Noida following which we arrested the trio," the official added.On July 26, contract killers of Mutthu Kasai gang were arrested from Noida when they had come to kill a builder. The accused have so far killed six persons on contract, including headmen of various villages in UP.