The country was first placed on alert in November 2015 following a suicide attack on a police bus.
This came months after 38 people - including 30 British holidaymakers - were gunned down on a beach in the tourist resort of Sousse.
The state of emergency has been extended a number of times since then, most recently on Monday (March 12).
The Foreign Office (FCO) on Thursday (March 14) issued fresh travel advice for Tunisia.
