The fissures within the Kerala unit of Aam Aadmi Party (AAP) came to the fore on Friday as the party’s central leadership issued a show cause notice to the state unit over its support to Congress-led United Democratic Front (UDF) in the upcoming Lok Sabha elections. The move comes at a time when the Arvind Kejriwal-led central leadership of AAP and Congress are at loggerheads over a tie-up in three states – Delhi, Haryana and Punjab.