V Rajasekhar, a native of Suryapet in the district, yesterday participated in the physical training test after clearing the written test in Nalgonda town.
"During the 800-meter run as part of physical fitness test for recruitment of police constable, he completed the first round of 400 metre but collapsed during the second round. He was taken to a hospital where he died while undergoing treatment at around midnight yesterday," Nalgonda District Superintendent of Police N Prakash Reddy told PTI.
A case under section 174 CrPC (suspicious death) has been registered in connection with the incident and probe is on.