Tunisia is increasing its security after a suicide bomber blew himself up in the tourist resort of Sousse and police foiled another attack in Monastir.
No group has claimed responsibility but the Islamist government says it is now battling al Qaeda-linked militants boosted by chaos in neighbouring Libya.
The first bomber had sought to enter a hotel with a suitcase but was reportedly turned away and made for the nearby beach where he detonated his device.
Authorities say they prevented another attack from a would-be suicide bomber at former President Habib Bourguiba’s tomb in Monastir.
The bombing is bad news for Tunisia’s vital tourism industry which attracted 5.8 million mostly European visitors to its desert tours and Mediterranean beaches last year.