London (CNN) -- A former editor for the News of the World was released without charge Friday by British police hours after he had been taken into custody, but was told to report back to police in October. Andy Coulson was arrested earlier Friday in connection with allegations of phone hacking and corruption in a case that promises to be a growing political liability for Prime Minister David Cameron, whom Coulson had served as press secretary. "I came in today voluntarily as I have been offering to do in the last few months," Coulson told reporters outside Lewisham Police station. "There is an awful lot I would like to say but I can't."
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NEW: Police make another arrest Friday night
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Andy Coulson, former communications chief for PM, told to report back in October
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Prosecutors ask police in Scotland to look into specific phone hacking claims
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The offices of another paper in central London are reportedly searched by police
@placeholder used his address to call for full inquiries into the phone hacking scandal, urging a broad reform of the press.