Tunisia’s health minister says the death toll in a dramatic museum attack has risen to 23 people, including 18 foreign tourists.

Said Aidi said Thursday that five Tunisians were killed, including the two gunmen. Authorities are searching for two or three other possible accomplices. He said several victims were brought in without identity documents.

Moncef Hamdoun, an official with the Charles Nicolle hospital where many victims were taken, said seven of the dead remain unidentified.

Spain’s foreign minister said in Valencia that two Spanish tourists were found safe after hiding out in the Tunis museum all night after Wednesday’s attack.

Photo Credit: Tunisians holding candles pray at the entrance gate of the National Bardo Museum where scores of people were killed after gunmen staged an attack, Tunis, Wednesday, March 18, 2015. Michel Euler / Associated Press