Former Congress MP Y S Jagan Mohan Reddy has begun a day-long fast in New Delhi today to protest against the injustice meted out to Andhra Pradesh in the Krishna Water Disputes Tribunal award.The former MP from Kadapa, who had resigned from the party in November last year, is sitting on a dharna at Janatar Mantar along with his supporters and farmers to highlight their cause. Some Congress MLAs from Andhra Pradesh are also participating in the dharna along with Jaganmohan Reddy.