Edinburgh (Scotland), May 15 : Campaigners chained themselves together on Thursday as part of a worldwide call for the release of a doctor jailed for speaking out about poverty.

Dr Binayak Sen worked with the poorest people in central India for decades, but was jailed two years ago for speaking up for his patients.

The campaigners - who included MSP and GP Richard Simpson - dressed in white coats and masks to protest outside the Royal College of Surgeons in Edinburgh.

Amnesty International''s Scottish programme director John Watson said: "Dr Sen has worked with the poor people in central India for decades. He has won international acclaim and awards."

The organisation considers his sentence to be based on trumped-up charges related to his political work. (ANI)