Mahottari, Feb 27: CP Mainali, the chief of CPN-ML has been critically injured in an accident when the car (Ba.4.Cha 2120) he was travelling collided with a pick-up van (Na.4.Kha 7668) in Bardibas of Mahottari district this afternoon. His son, daughter-in-law, grandson and driver were also injured in the incident. Among them he condition is said to be as serious and was airlifted to Kathmandu after primary treatment. He was returning from his hometown Jhapa to the capital. He has sustained injuries on head and leg.