Northern Ireland First Minister Peter Robinson has announced a reshuffle of the DUP's executive ministerial team.

Jim Wells is to replace Edwin Poots as health minister, while Mervyn Storey will take over from Nelson McCausland as social development minister.

Mr Robinson announced the reshuffle on Twitter.

North Belfast MLA Mr McCausland has faced fierce criticism over his handling of housing executive contractors.

Mr Poots has faced criticism following his decision not to lift a ban on gay men giving blood.

Mr Storey is the former chairman of the education committee at Stormont.

He has been a staunch critic of the education minister's handling of the education and skills authority.

Mr McCausland, who was made Minister for Social Development in 2011, has been under pressure since he accused four building firms of being involved in a housing executive scandal.

He refused to apologise to the four companies named in the Assembly last year as having received an estimated £18m in overpayments.

Mr Robinson tweeted that Mr Wells would be the new Minister for Health, Social Services and Public Safety, replacing Mr Poots.

Northern Ireland's most senior judge had said comments by Mr Poots about the judiciary during an assembly debate on the issue were detrimental to the rule of law and damaging to public confidence in the justice system.

Lord Chief Justice Sir Declan Morgan outlined his concerns in a letter to the first and deputy first ministers eight months ago.