BSP chief Mayawati accused Bhim Army founder Chandrashekhar Azad of trying to divide Dalit votes.
In a move which could upset the BSP-SP-RLD alliance in Uttar Pradesh, Dalit group Bhim Army, which has a considerable following in western Uttar Pradesh, has appealed to members of the community to vote for Congress's Saharanpur Lok Sabha candidate Imran Masood.
The move comes days after Bahujan Samaj Party (BSP) president Mayawati described Bhim Army founder Chandrashekhar Azad as a "BJP agent" and accused him of trying to divide Dalit votes.
The call to support Imran Masood, who had grabbed headlines during the 2014 general elections for his controversial remarks against Narendra Modi, was taken late Monday night.
The BSP-SP-RLD alliance has fielded Faizul Rehman from the seat. Sitting BJP MP Raghav Lakhanpal is seeking re-election from the constituency.
At a joint rally in Deoband in the constituency on Sunday, Mayawati had appealed to Muslim voters to consolidate behind Rehman and ensure that their votes do not get split.
A Bhim Army leader alleged that BSP-SP activists manhandled Dalits carrying pictures of Chandrashekhar at the rally and tore their posters.
"Masood helped the Bhim Army when no one else came out in its support," the leader said, referring to police cases against the Dalit group's members following caste clashes in Saharanpur in May 2017.
Congress general secretary for east Uttar Pradesh Priyanka Gandhi Vadra had met Chandrashekhar at a Meerut hospital last month, which was a Dalit outreach move of the party.
Recently, after Chandrashekhar announced to contest against Prime Minister Modi in Varanasi, Mayawati had termed him an "agent of the BJP who wants to split Dalit votes".
In response to her remark, Chandrashekhar had said SP chief Akhilesh Yadav and his father Mulayam Singh were "agents of the BJP" as they "allowed atrocities on Dalits".
Saharanpur goes to polls in the first phase on April 11.