UK Prime Minister Theresa May has announced her country has signed a security pact with Kenya.

As part of the deal, the UK will help build a cybercrime centre in the capital of Nairobi to tackle child sexual abuse.

Kenya's President Uhuru Kenyatta said that the bond of friendship between his country and the UK had been deepened after the pact was signed.

Mrs May said the UK intended to become the largest investor in the G7 in Africa by 2020.

Mrs May said the co-operation on security would help make both countries more secure.