Nag Ashwin's 'Kalki 2898 AD', led by Prabhas entered its fourth week on Friday, and surpassed the Rs 600 crore mark domestically. The sci-fi thriller which released on June 27, has achieved a new milestone by becoming the seventh Indian movie to enter the coveted Rs 1000 crore club. Amidst achieving this feat, the film has landed into trouble after almost one month of its release.