Those arrested have been identified as Vinay Kumar Indaura, Ravi Daulat, Akash Deep and Rakesh Verma and were sent to jail today, Sub-Inspector Manoj Singh said.
Singh said the four made calls to junior engineer Chandra Shekhar of Idgah locality here and persuaded him to deposit the sum in their bank account in Delhi in installments.
Singh said the police managed to identify the accused by probing their bank account. The accused were brought to Lakhimpur and sent to jail today.