French President Francois Hollande and his Tunisian counterpart Beji Caid Essebsi expressed their solidarity to face militants after assaults hit their respective countries on Friday.

During a phone conversation, Hollande relayed Paris' support for Tunisian authorities, which are struggling to uproot Islamist insurgents who emerged after the 2011 uprising in the North African country, a statement issued by the presidency office said.

Both leaders also vowed to further cement security cooperation to tackle terror attacks, it added.

On Friday morning, a man was decapitated and two people were wounded after two assailants stormed a gas company in Isere, southeastern France, and exploded gas containers.

Hours laters, in the southern Mediterranean rim, a gunman opened fire on a Tunisian beachside hotel in the popular resort town of Sousse. At least 27 people, including foreign holidaymakers, were killed.