An assistant sub-inspector (ASI) committed suicide by shooting himself with his revolver on Wednesday night at his residence in Mandi Gobindgarh police station.
Sukhwinder Singh was to attend a training course for which he had to undergo a medical test on Thursday.
A police official, who went to his residence on Wednesday night to intimate him about the date of his medical examination, found him dead there.
According to Amloh deputy superintendent of police (DSP) Arshdeep Singh, the ASI was in depression and was suffering from asthma and blood pressure.
As per local police officers, Sukhwinder did his duty on August 6 night and then sent his wife and daughter for taking care of an ailing relative.
The ASI had divorced his first wife and had a son and a daughter from the first marriage. He has a seven-year-old daughter from his second marriage.
The police have initiated proceedings under section 174 of CrPC. The exact reason of the suicide is yet to be ascertained.