Patiala/Chandigarh, May 9 -- High drama prevailed at Nangal dam in Rupnagar district on Thursday when Punjab minister Harjot Singh Bains locked Bhakra Beas Management Board (BBMB) chairman Manoj Tripathi in the dam's guest house despite a Punjab and Haryana high court directive to Punjab's AAP government not to interfere in the working of BBMB. CM Bhagwant Mann also rushed to the dam and declared BBMB officials would not be allowed to release water to Haryana. Accompanied by around 50 supporters, Bains announced: "We have locked BBMB chairman inside Sutlej Bhawan (the dam's guest house) as he came here to attempt to release water from the Nangal dam to Haryana. When Punjab is struggling with ongoing Indo-Pakistan tensions at the border, the BBMB chairman is making such an attempt. He should be booked for treason." Then Mann arrived amid sloganeering by the supporters, mostly AAP workers who have been protesting for the past one week against the BBMB decision to release water to Haryana from Nangal dam. BBMB chairman Tripathi was at the dam to oversee water regulation after the Punjab and Haryana HC on Wednesday restrained the Punjab government from interfering in the board's work in Nangal....