Police have arrested 22 people in eastern India in three separate rape cases involving teenage girls, officials said on Sunday, as grisly new attacks against women come to light despite tougher penalties.

Reports of sexual assault of children have dominated headlines in recent weeks, leading to an outpouring of anger across the country.

Police arrested 14 men and a woman in one of the latest cases after a 16-year-old girl, who had been raped, was attacked and burned to death after her parents complained to a village council.