Farhad Noory from Afghanistan looks at one of his artworks during his first exhibition in Belgrade. [Photo/Agencies]

An Afghan boy dubbed "little Picasso" exhibited his paintings and photographs in Belgrade on Wednesday, hoping to raise money for a Serbian child's post-cancer therapy.

Farhad Noory, 10, has lived in a refugee camp in the city with his parents and two younger brothers for eight months, during which time his paintings of famous people have made him a local media star.

His range of portraits include German Chancellor Angela Merkel, surrealist painter Salvador Dali and footballer Cristiano Ronaldo.

Noory's family is part of the recent wave of migrants from South Asia, the Middle East and Africa who hoped to start new lives in Europe but got stuck in Serbia after a route was closed in 2016.

The boy's gift for art was spotted during language and painting workshops in Belgrade that were organized by local aid groups for refugees and migrants.