Arnab Chakraborty, cashier of the School Education department had forged the cheques of the Director and Additional Director of the department and had fled to Kolkata on September 11 last.
A special team of police led by DSP Sanjoy Biswas found that he transferred Rs 30 lakh from his bank account to a prostitute in Kolkata in different phases since March last.
Acting on this information, a joint team of Tripura and West Bengal police laid a trap and arrested him from Baguihati in Kolkata yesterday, Das said.