Harry , who is on a two-day trip to Singapore, was visiting a community centre run by a Muslim-faith led voluntary welfare organization called Jamiyah Singapore; which voices a range of services including help for recovering addicts to residential homes for young people.
He was also given a silat demonstration, led by former world champion Sheik Alauddin Yacoob Marican.
As the sun started to set, he joined around 80 young Muslims for iftar.
Dr Mohd Hasbi Abu Bakar, president of Jamiyah Singapore said: "Ramadan is a time of reflection, for spending time with family and friends while giving support to those who are less fortunate. We are honoured that Prince Harry was able to join us for this iftar and to meet with the young people that are part of the Jamiyah Singapore community ."