New Delhi, Jul 15 (IANS): President Pranab Mukherjee on Friday wrote to his French counterpart Francois Hollande to convey condolences on the deaths in the "heinous" terror act in Nice and said India stands with France in its fight against terrorism.

In his message, Mukherjee said, "I am deeply pained to learn that France is once again afflicted by a major tragedy caused by a heinous act of terror last evening. The pre-meditated massacre of innocent people as they were participating in Bastille Day celebrations - including, sadly, many children, is an unspeakable crime."

"Please accept my heartfelt condolences on this shocking incident. The people of India stand beside the people of France with solidarity and sympathy. We share your grief at the loss of lives and pray for the swift recovery of the injured," Mukherjee wrote in his message.

Earlier, in a tweet, Mukherjee expressed shock at the terror attack and strongly condemned the perpetrators.

"India stands shoulder to shoulder with the people and the government of France as it responds to this attack. We will strengthen our cooperation with France and other countries in the fight against terrorism," Mukherjee said in a series of tweets.

At least 80 people were killed on Thursday night when a large truck mowed through a crowd celebrating Bastille Day in Nice.