Katy Perry's chicken once caused a bomb threat.

The 'One That Got Away' hitmaker was reduced to tears when there was a bomb scare while she was on tour last year, but police eventually discovered the source of the sniffer dogs' interest was actually some chicken left in a backpack near Katy's dressing room.

She told Interview magazine: ''Right before I was supposed to go on stage there was a bomb threat. You know those bomb-sniffing dogs? They were everywhere.

''They started sniffing a backpack near my dressing room. Well, they had to put me in an armoured car, and I started crying at one point ... but we found out at the end that it was chicken the dogs were sniffing.''

However, this isn't the first time Katy - who split from husband Russell Brand in December - has feared being bombed.

The 27-year-old star had a strict Christian upbringing and has previously admitted her pastor parents Keith and Mary Hudson banned her from reading any book other than the Bible and wouldn't let her listen to non-religious music, and she was always scared she would be ''bombed'' if she went against their wishes.

Katy recently said: ''I didn't have a childhood. Growing up, seeing Planned Parenthood, it was considered like the abortion Clinic.

''I was always scared I was going to get bombed when I was there. I didn't know it was more than that, that it was for women and their needs. I didn't have insurance, so I went there and I learned about birth control.''