"My heart is filled with grief at the untimely end that has befallen 10 members of a trekking group in the Kurankani hills of Theni district," he said in a condolence message released by the Raj Bhavan.
The Governor offered his deep condolences to families of those mourning the loss of their near and dear ones.
He also prayed for the early recovery of the injured persons.
"I join the people of Tamil Nadu in praying for the early and complete recovery of the trekkers admitted in hospital and all the others affected by the traumatic incident," he said.
Ten persons, including seven women, were killed in the fire at Kurangani Hill ranges in Western Ghats on Saturday.
A 36-member team--24 people from Chennai and 12 from Tiruppur and Erode districts--had embarked on the trekking expedition and reached Kurangani hills on March 10.
The team included 25 women and three children.