The BBC understands mother-of-two Mrs Mann, who took up the post about six months ago, took her own life.
Mr Langdon, who took up the post of chief constable in 2008, has previously served with the Lancashire and Merseyside forces.
Prince Mohammed, who is in his early 50s, replaces his uncle, Prince Ahmed, less than five months after he took up the post.
After the 1997 election, Clare Short took up the post of International Development Secretary and promised to "try to be good, but I can't help being me".
He took up the post of Bishop of Durham in November 2011 and worked as Dr Williams' special envoy to Africa, attempting to build unity between Christian and Muslim communities in Nigeria.
Members of 201 Squadron, Guernsey's Own, from Royal Air Force Kinloss will be led by the squadron's commanding officer, Wing Commander Mike Blackburn who took up the post in December.
The GB team will be under the guidance of new performance coach Michel Assouline for the first time at a major international competition after the Frenchman took up the post earlier this year.
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Terry, currently unemployed and a keen rapper in his spare time, took up the voluntary post of youth mayor for Bridgend after spending time as a member of the youth council.
BBC: NEWS | UK | Wales | South East Wales | Youth mayor to help homeless
Also on Wednesday, Gen Dannatt took up the largely ceremonial post of constable of the Tower of London.
Colleagues raised concerns about his work soon after he took up a post at the Prince George Hospital in British Columbia.
Mr Watkinson, who took up his post at the RCHT in January 2007, has been on extended leave since the joint investigation began.
After returning to north Wales in 1963, Mr Parry took up a post at the Prince of Wales Theatre doing part-time lighting work.
Governor Alan Craig, who was based at Prison Service headquarters in Belfast, took up his post as the new deputy governor of Maghaberry Prison on 1 July.
Permanent Secretary Derek Jones, who took up his post as the Welsh government's top civil servant last week, said action was already being taken to improve the management of grants to the third sector.
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By the end of 2009, Xu had left Renren and took up a post as COO at the online division of gaming company Shanda.
FORBES: Chinese Tech Star Jack Xu Looks To PaPa For His Next Hit
Ms Mann, a mother-of-two, took up the head teacher's post at Sytchampton Endowed school about six months ago.
Mr Wright, who took up his post six weeks ago, said the fact there was a surplus of prison capacity in the East Midlands would inevitably play a part in considerations.
In this context, then, it is interesting to watch the evolution of Panasonic, the heritor brand of Matsushita, a venerable name that never quite reached the status of zaibatsu or keiretsu (another type of Japanese conglomerate), but still narrowly missed being broken up in the industrial reforms that took place in post-World War II Japan.
After months of surgery, physiotherapy and rehabilitation, he returned to work in May 2009 and took up an administrative post but has recently returned to the Hertfordshire force's Road Policing Unit.
BBC: Hertfordshire Pc to lead Raoul Moat officer in marathon
Before becoming President Obama's point man on the economy, he was president of the New York Federal Reserve - a post he took up in late 2003.
Portland's governor Kevin Lockyer, who took up his post last summer, told BBC Radio 5 Live that the report painted a fair picture of the institution but things were getting better.
Wasps coach Edwards was overlooked by the England set-up and instead took up a part-time post with Wales in January.
Wednesday's blasts came on the day India's new Home Minister, Sushilkumar Shinde, took up his post.
As he took up his new post on Tuesday he said he wanted to hand back more responsibility to Bosnian politicians and reduce the wide-ranging powers that his post commands.
The post-IPO quiet period over, analysts for the investment banks that took Kayak Software public picked up coverage of the stock this morning with mostly lukewarm ratings.
FORBES: Kayak Software: Bankers' Analysts Pick Up Coverage; Mostly Lukewarm
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