Justin Bieber's laptop has been stolen.

The 'Never Say Never' hitmaker was performing in Tacoma, Washington, last night (09.10.12) when a thief struck, allegedly taking the computer and his camera, which the singer said contained a lot of ''personal'' material.

He tweeted: ''sucks when u take personal footage and people dont respect your privacy.

''yesterday during the show me and my tour manager josh had some stuff stolen. really sucks. people should respect other's property

''i had a lot of personal footage on that computer and camera and that is what bothers me the most. #lame #norespect (sic)''

It is unclear if anything else was taken in the alleged theft.

The incident comes on the same day Justin was the victim of a 'swatting' prank.

A call was placed to emergency services, with the person on the line claiming someone was waving a gun next to the 18-year-old star's Los Angeles home.

Cars and helicopters were dispatched to the property - which is in an area where stars including Kourtney Kardashian, Romeo and Travis Barker also have homes - and Justin's security staff let the officers in, but a sweep of the property found nothing.

Police believe the caller engaged in a prank using an app, with the same thing recently happening to both Miley Cyrus and Ashton Kutcher.