THIRUVANANTHAPURAM: Senior Communist and Trade Union leader Pettah G Krishnankutty (89) passed away on Saturday. He was undergoing treatment at a private hospital in Thiruvananthapuram. He had played an instrumental role in establishing trade union in the capital city. He had also served as CPM Taluk Committee member and CPM City Committee member. His body will be cremated at the Thycaud Santhi Kavadam by 11 am. He is survived by wife Sulatha, sons K Suresh, K Santhosh and K Sanal.