Dhirendra, Daboo and Chunmum, aged between 17 and 18 years, were arrested in Shyampur village here yesterday in connection with the killing of two children, SSP Satyendra Veer Singh told reporters here.
He said an exorcist, Bablesh Varshney, was also arrested on the basis of information provided by the trio.
The exorcist had asked the teenagers to arrange blood of 11 children and in return promised them wealth and fortune through black magic, Singh said.
The trio had allegedly killed two children in Jawa area in Aligarh, one in Bulandshahr and were planning to kill one more child, the SSP said.
Police succeeded in cracking the case after kin of one of the victims raised suspicion over Varshney's role, the police officer said.
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