In her opening heat in the 500m event. A warning about a new scam involving the apple itunes service. Tax Authorities Say elderly and Vulnerable People are becoming victims. Good afternoon and welcome to bbc news. The haitian government is to summon oxfam to explain why it didnt report allegations that oxfam staff had exploited local people for sex following the earthquake there in 2011. The haitian ambassador said his government was appalled that it wasnt informed. Four members of staff were dismissed and three resigned. The uk government has said it is reviewing its relationship with the charity. Angus crawford reports. It was an earthquake that devastated haiti, killing more than 200,000 people, affecting millions more. Aid agencies from around the world stepped into the chaos. Oxfam, with more than 70 years experience, had hundreds of staff in the field. But an investigation by the times found that in 2011, four Staff Members were sacked and three others resigned over allegations o