WASHINGTON (CNN) -- The United States on Friday renewed its warning to U.S. citizens to defer non-essential travel to Pakistan amid rising concerns over terror activity that would be directed against U.S. interests.
The warning, originally issued in April, was reissued after authorities in Britain arrested 24 people in connection with what authorities said was a plot to down commercial jetliners with explosives.
A senior Pakistani intelligence source confirmed Friday seven arrests in Pakistan last week that led to Thursday's arrests in Britain.