New Delhi, April 28 -- In a setback to the Congress ahead of the Lok Sabha polls, senior leader Arvinder Singh Lovely has resigned as the party's Delhi unit chief, citing the alliance with the AAP as one of the reasons.

He said the Delhi Congress unit was against the alliance but the party high command went ahead with it.

In his resignation letter sent to Congress president Mallikarjun Kharge on Saturday, Lovely also said that all unanimous decisions taken by the senior Delhi unit leaders have been "unilaterally vetoed" by AICC Delhi in-charge Deepak Babria.

This comes days after former Delhi minister and AICC member Rajkumar Chauhan resigned from the party following an altercation with Babria.

In his letter to Kharge, Lovely said, "I...