The MLAs who joined the BJP were Ngamthang Haokip, Y Surchandra Singh, S Bira Singh MLA and O Lukhoi Singh.
Security forces have arrested a People's Liberation Army terrorist of Manipur while he was trying to cross over the international border at Dawki in East Khasi Hills district of Meghalaya.
The win took the Highlanders to the second spot with eight points as they remained unbeaten from four matches.
Churchill Brothers scored their maiden win of the season when they came back from behind to down 10-man Bengaluru FC 2-1 in the fifth round of the hero I-League match, in Vasco, on Friday.
The Sergio Lobera side now have six points from three matches, while SC East Bengal remained at the bottom of the table, yet to open their account in their debut ISL season.
Before leaving, Biren Singh said that he and the present and former Congress MLAs will meet the BJP central leadership in the national capital to personally introduce and to invite them to join the party.
Chhetri was shown the first yellow in the 22nd minute after bringing down Anirudh Thapa, something he repeated on the same player after nine minutes to be sent off.
As in their last match against Kerala Blasters, ATKMB struggled to get going initially, while SCEB made some fine attacking moves but lacked the finishing touches.
Missed chances cost DSK Shivajians, who went down fighting 0-1 to Aizawl FC in the final home game of the Hero I-League 2015-16 at the Shree Shivchhatrapati Sports Complex in Mhalunge-Balewadi on Saturday.
Veteran Congress leader Digvijaya Singh and Bharatiya Janata Party candidates Jyotiraditya Scindia and Sumer Singh Solanki on Friday won Rajya Sabha election from Madhya Pradesh.
NorthEast United inched closer to a playoffs berth with a 2-1 win over 10-man SC East Bengal in the ISL
Benzema to stand trial in sex tape case, says lawyer.