Tunisian Prime Minister Habib Essid has told the BBC that police took too long to react to last week's jihadist attack that killed 38 people, mostly Britons.
"The time of the reaction - this is the problem," Essid told the British broadcaster on Friday. Police had been "blocked everywhere", he added.
Essid spoke as Britain's Queen Elizabeth II and Prime Minister David Cameron led a minute's silence Friday for the victims, 30 of whom were British tourists.
The Islamic State group claimed last Friday's attack by jihadist gunman Seifeddine Rezgui at the beach resort of Port El Kantaoui just north of Sousse.
Three Irish nationals, two Germans, one Belgian, one Portuguese and a Russian were also killed.