The BJP leadership in Karnataka on Thursday took serious note of two of its MLAs and an MLC attending a dinner hosted by deputy chief minister DK Shivakumar soon after the Congress Legislature Party (CLP) met in Belagavi on the previous day. BJP state president BY Vijayendra said he would seek an explanation from the trio -- ST Somashekar, MLA from Yeshvantpur, Shiavram Hebbar (MLA from Yellapur) and H Vishwanath, an MLC - after reports emerged of their open defiance.