Alleging harassment by the electricity department officials and a local BJP leader, a man committed suicide in the Shashtrinagar locality here, police said today.Nishan Singh yesterday committed suicide at his residence here after allegedly being harassed by electricity department officials and local BJP leader Pradeep Khullar, they said.On the statement of Singh’s wife Seema, a case of abatement to suicide was registered against Khullar and four others, police said.