Pietersen left out of England's World Twenty20 squad

Kevin Pietersen has been left out of England's World Twenty20 15-man squad and one-day series against South Africa.

The 32-year-old was dropped for the third Test against South Africa after allegedly insulting his England team-mates in texts to the tourists.

Pietersen apologised for the messages, admitting they were "provocative".

"Kevin Pietersen's future involvement is still being determined," said national selector Geoff Miller.

He had previously retired from limited-overs internationals, but made himself available in a surprise U-turn.

England play five one-day internationals against the Proteas - the first on 24 August in Cardiff - before they commence the defence of their World Twenty20 crown in Sri Lanka.

Pietersen was out for a golden duck to the left-arm spin of Hampshire's Liam Dawson playing for Surrey on his only appearance since being dropped from the Test side, but averages 41.84 in one-day internationals.

He was named player of the tournament in England's victory in the last World Twenty20 in 2010 with an average of 62 in six innings.

But he was left out of the initial 30-man squad for this year's tournament which was announced during his short-lived retirement from shorter formats.

England NatWest ODI Series squad: Alastair Cook (Essex) (captain), James Anderson (Lancashire), Jonny Bairstow (Yorkshire), Ian Bell (Warwickshire), Ravi Bopara (Essex), Tim Bresnan (Yorkshire), Jade Dernbach (Surrey), Steven Finn (Middlesex), Craig Kieswetter (Somerset), Eoin Morgan (Middlesex), Samit Patel (Nottinghamshire), Graeme Swann (Nottinghamshire), Jonathan Trott (Warwickshire), Chris Woakes (Warwickshire).

England squad for ICC World T20: Stuart Broad (Nottinghamshire) (captain), Jonny Bairstow (Yorkshire), Ravi Bopara (Essex), Tim Bresnan (Yorkshire), Danny Briggs (Hampshire), Jos Buttler (Somerset), Jade Dernbach (Surrey), Steven Finn (Middlesex), Alex Hales (Nottinghamshire), Craig Kieswetter (Somerset), Michael Lumb, Nottinghamshire), Eoin Morgan (Middlesex), Samit Patel (Nottinghamshire), Graeme Swann (Nottinghamshire), Luke Wright (Sussex).