Four released, eight still in custody in connection with Tunisian massacre

Eight people are in custody on suspicion of direct links to a deadly attack on a Tunisian beach resort, while police have released four others detained earlier in the investigation.

The so-called Islamic State group claimed responsibility for Friday's attack, in which Tunisian student Seifeddine Rezgui opened fire on a beach in the resort of Sousse, killing 38 people including three Irish tourists.