ATJ Lučko (Croatian: Antiteroristička jedinica Lučko) is an elite Anti-Terrorist Unit of the Croatian Police stationed in Lučko near Zagreb, the capital of Croatia. The unit was established on September 7, 1990 and was the first Croatian fighting unit in the Croatian War of Independence. It was also the only fighting unit of Croatian forces at the time. During the course of Croatian War of Independence the unit had 350 members. The unit lost only 14 members and 52 police officers were wounded.