Jonas Brothers' existence looks increasingly bleak after their Twitter account was deleted.

The US pop trio recently cancelled 19 North American tour dates with just one day of notice.

A rep said at the time that there was "a deep rift within the band. There was a big disagreement over their music direction."

Split rumours have now been stoked once more after their Twitter account was taken offline, although their Facebook page remains.

TMZ meanwhile recently issued a video of singer Joe Jonas walking to his car with a minder, but the singer refused to answer any questions in relation to the group.

He was also recently filmed telling a cameraman to "shut up" after being asked about the future of Jonas Brothers.

The band's last full album 'Lines, Vines and Trying Times' was released in 2009, whilst their upcoming effort 'V' was scheduled to hit shelves later this year.