LONDON  - British police investigating bribery by Rupert Murdoch’s media empire arrested five staff from The Sun tabloid, a policeman, a member of the armed forces and a defence ministry employee on Saturday. The arrests represent a dramatic widening of police investigations into Murdoch’s British newspaper empire, following the phone hacking scandal which led to the closure of the News of the World in July. The arrested Sun employees were associate editor Geoff Webster, picture editor John Edwards, chief reporter John Kay, chief foreign correspondent Nick Parker and reporter John Sturgis.