US Secret Service chief to retire

The head of the Secret Service -- the police agency that protects US President Barack Obama -- is retiring, a spokesman said Friday, less than a year after the elite squad was hit by a sex scandal.
Mark Sullivan is "retiring as of the 22nd of February," Secret Service spokesman Brian Leary told AFP, noting he had overseen 23 national security events, including Obama's inaugurations in 2009 and 2013.