New Delhi, May 17 -- In a major setback to former Delhi Chief Minister Arvind Kejriwal, as many as 13 councillors of the Aam Aadmi Party resigned from the party on Saturday, citing halted development work and rising internal conflict as the reasons for their move.

In the latest political twist at the Municipal Corporation of Delhi (MCD), the 13 AAP councillors announced the formation of a breakaway outfit - Indraprastha Vikas Party, PTI said in a report.

"In the two and a half years since our election, no development work has been carried out. The party was too busy with internal conflicts and blame games," senior councillor Mukesh Goyal was quoted as saying by PTI.

"We repeatedly raised our concerns with the leadership, but no one lis...