Alyson Hannigan

BOSSES at the Haymarket Theatre need to beef up their security.

An intruder managed to get backstage after a performance of When Harry Met Sally and tried to get into Alyson Hannigan’s dressing room.

The "fan" managed to bypass security and get close to the Buffy The Vampire Slayer actress’s room on Saturday night.

Although Alyson, who stars alongside Luke Perry in the play, wasn’t in there at the time, sources say there was concern about how easily he managed to get so close to her private room.

An insider tells us: "This guy in his mid-20s was hanging around the stage door after the performance. He tried to sneak into Alyson’s room but was stopped by security. There was a lot of shouting and swearing and neither Alyson or Luke were allowed to leave until he had been ushered out of the way."

Yesterday, a spokesman tried to play down what happened, saying: "Somehow an audience member found himself backstage after going through the wrong exit door.

"He took a wrong turn and found himself at her dressing room and thought he’d go in and try and grab her autograph.

"It was dealt with quickly and he was asked to leave."