A security guard was injured after unidentified assailants allegedly opened fire at the office of a BJP candidate contesting the upcoming Maharashtra local body elections in Maharashtra's Thane district around midnight on Wednesday, police said, reported news agency PTI.

The incident took place in the Ambernath area and was captured on CCTV cameras installed outside the office of Pawan Walekar, who is the BJP candidate for the Ambernath Municipal Council polls scheduled on December 20, reported PTI.