Hundreds of Reserve Bank of India (RBI) officers joined a protest on Tuesday against a change recently made in the promotion policy, the central bank sources said.

The protest, that started around lunchtime, went on till the evening prompting some senior central bank officials to discuss the matter with the protesters.

According to sources, in some grades, promotion was almost automatic except for a certain percentage.

However, a recent decision to increase the percentage of people who will be left out for promotion made a section of the officers uncomfortable.