AceShowbiz - British singer Cheryl Cole's brother has reportedly been arrested as part of a police investigation into an armed robbery at a post office in England. Andrew Tweedy, who is also known as Andrew Leighton, is thought to be one of four men being held by cops investigating a raid in North Tyneside, England on Monday, May 10, according to Britain's The Sun. Two men brandished a gun and a machete at post office staff and customers before escaping with thousands of pounds.

Tweedy has not been confirmed as one of the suspects, but a source tells the newspaper, "He has been arrested." A police spokesman tells The Sun, "A vehicle and firearm have been recovered. We're pursuing lines of inquiry."

The Girls Aloud star's 29-year-old sibling has previously spoken of his shame at causing his famous sister embarrassment with his wild behavior, saying, "Cheryl wants to help me but I'm too far gone. I know I'm breaking her heart but I'm not strong enough to sort myself out."