The Shiromani Akali Dal (SAD) leaders, however, escaped unhurt.
Talking to reporters here, Minna alleged that their vehicles were damaged by the Congress workers.
He said that he, along with Jindu and Mann, left for Mallanwala after they came to know that Congress workers were not allowing Akali candidates to file nominations.
"As we approached Mallanwala, hundreds of Congress workers attacked our vehicles with stones, and even fired at us," alleged Minna.
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Top police and civil officials visited the spot.
No case was yet registered, police said.
Elections to three municipal corporations and 32 municipal councils and Nagar Panchayats will take place on December 17.
The SAD has demanded that elections to Mallanwala and Makhu nagar panchayats in Ferozepur district and municipalities of Ghanaur in Patiala district and Baghapurana in Moga district be cancelled.
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