An employee of a Delhi-basedfirm was booked for allegedly raping a colleague during a business trip to Bengaluru last month, Palghar police said on Tuesday.The accused was identified as Kamlesh Kumar (32) and a rape case was filed in Tulinj police station in Vasai in Palghar, an official said."The accused gave the victim a drink laced with a sedative and raped her during a business trip to Bengaluru last month. He also threatened her and has been booked for rape and criminal intimidation. He has not been arrested as yet," the official added.