Who betrayed the Mahatma?

Was there a British angle in Mahatma’s assassination? Another indication of a British hand in the plot was Apte’s refusal, at the height of the Great Depression, of a full-time job in the Royal Indian Air Force.The most likely explanation is that he was probably already occupied — as a British agent. Maharashtra ATS Chief Hemant Karkare’s investigation into that nexus was cut short when he was killed in the September 2008 attack on Mumbai, giving rise to a widespread belief that the attack was primarily aimed at eliminating him.