MUNICH (AP) -- Security has tightened at Oktoberfest after a deadly knife attack last month in western Germany, and officials are warning revelers to expect longer lines to enter as metal detectors are deployed for the first time in the Bavarian beer festival's 189-year history.

Oktoberfest has tightened security at the beer festival in the wake of a deadly knife attack in western Germany last month

Oktoberfest implements heightened security measures after a knife attack in western Germany. Expect longer entry lines with new metal detectors.