By NBF News

South African world 800 metres champion Caster Semenya's return to competitive athletics has been delayed as her comeback event in Zaragoza has been cancelled.

The 19-year-old underwent gender verification tests after winning gold at the Berlin world championships last August and has not competed since.

Semenya's coach Michael Seme said 'the meet (on June 24) is off and we will make an announcement on Tuesday' about her next move.

Athletics South Africa has made clear Semenya is not banned from competition but said she must wait for the results of her tests from the International Association of Athletics Federations which are not expected until June.

Her lawyers said in April that the tests proved she could run as a female.