The Shiv Sena Uddhav Balasaheb Thackeray (UBT) on Monday claimed that the joining of seven AAP MPs, including Raghav Chadha, into the BJP was a "merger of corruption”, coming after weeks of political speculation. Slamming the move, the Thackeray camp in an editorial in the party's mouthpiece 'Saamana' said Chadha.