JMA - this report is dated:
14 Jan 2013
Three days later Al-Shabaab announced:
The Somali Islamist group al-Shabab says it has killed French intelligence agent Denis Allex in retaliation for a failed French operation to free him.
Link:http://www.bbc.co.uk/news/world-africa-21056592

Denis Allex had been captured in July 2009, whilst undercover as a journalist; his colleague managed to escape - no date readily found.