King Charles is to resume some public engagements after encouraging progress in his cancer treatment, Buckingham Palace has said. However it won't be a full return to official engagements for the King, who began his treatment in February. The type of cancer has not been disclosed. The palace said the King’s doctors were "very encouraged by the progress made so far and remain positive about the King's continued recovery". However they said it was “too early to say” how much longer his treatment would continue. King Charles will begin his partial return to public engagements with a symbolic trip to a cancer treatment centre. The palace said he would undertake more external engagements and host a state visit by the Emperor and Empress of Japan. A picture of the King and Queen Camilla, taken earlier this month in the gardens of Buckingham Palace, has been released. Clive Myrie presents BBC News at Ten reporting by Charlotte Gallagher and Jonny Dymond. Subscribe here: http://bit.ly/1rbfUog For more news, analysis and features visit: www.bbc.com/news #BBCNews