Terming the six-year journey with AAP as great learning, Lamba tweeted "The time has come to say 'Good Bye' to and to resign from the primary membership of the Party. The past 6 years journey was a great learning for me. Thanks to all,"
Lamba's meeting with Gandhi lasted for 50-minutes. However, there was no official word on what transpired in the meeting.
From the past few days, Lamba was seen attending events organised by the Congress hinting towards joining the party. Recently, she attended the program organised by the AICC at Veer Bhumi on the occasion of 75th Birth Anniversary of late Rajiv Gandhi.
She resigned from the on April 4 citing differences with Delhi Chief Minister Arvind Kejriwal and the party, stating, "You called late Congress leader Sheila Dikshit corrupt and in 2019 Lok Sabha polls you ask for an alliance with them."
Lamba, who was part of the Congress women's wing before joining the AAP, had in August said she would contest the next Assembly election as an independent candidate.
Assembly elections in the national capital will take place in 2020 with AAP seeking second term after posting a resounding victory in the 2015 elections. Lamba was associated with the Congress party for around 20 years before she joined Kejriwal's AAP.
(agency inputs)