A proclamation by the government offered a reward for information leading to the arrest of certain murderers and a pardon to an accomplice who gave the information."X" saw the proclamation in January 2014. On February 6th,2014,he gave false information to protect the murderers. On March 10th,2014,he gave information which led to the arrest and subsequent conviction of murderers."X" admitted that his only object in giving the information was to clear himself of a charge of murder and that he had no intention of claiming the reward at that time.However,in December,2016," X" filed a suit against the government for the reward.
Decide in the light of Indian and English cases
A contract law question.