Mohali, Dec. 21 -- A special CBI court in Mohali on Saturday acquitted city mayor Amarjit Singh Sidhu in a 15-year-old murder case, ruling that the prosecution failed to prove his involvement in the killing beyond reasonable doubt.

The case relates to the murder of Rattan Singh, who was shot dead in Bariyali village near Kharar on December 18, 2010. The firing incident also left four other members of the complainant's family injured.

Following the incident, police registered an FIR at the Balongi police station under sections related to murder, attempt to murder, unlawful assembly, criminal conspiracy and the Arms Act on December 19, 2010.

According to the FIR lodged by Rattan's son Harjinder Singh, the incident occurred around 9.15 pm...