India, Aug. 6 -- Two personnel of Gurugram Police's crime branch were killed and two others critically injured after their official vehicle rammed into an overloaded tractor-trolley on the Bundelkhand Expressway in Uttar Pradesh's Hamirpur district late Sunday night, police said on Monday.

The deceased were identified as sub-inspector Sanjay Kumar Singh (45), a resident of Tumbaheri, and constable Amit Kumar, 34, of Sitaram Chowk, both from Jhajjar district. The injured were assistant sub-inspector Indrajeet, 40, of Dabaoda Kalan, Jhajjar, and head constable Rajesh Kumar, 38, of Hardai, Bhiwani, who was driving the vehicle. All four were posted at the Sector 40 crime branch unit, officials said.

The incident took place between 10pm and ...