At least three Czech citizens have died and another remains missing following a collision between a catamaran and a sailboat near Split, Croatia, according to Croatian media reports. The incident occurred in the Adriatic Sea off the Croatian coast. Authorities are continuing search and rescue operations for the missing individual. Details surrounding the cause of the collision are currently under investigation. The Czech Ministry of Foreign Affairs has confirmed the deaths and is providing consular assistance to those affected. This incident marks a tragic event for Czech tourists vacationing in Croatia.