Farmers sat on an indefinite dharna at the minisecretariat here after failed talks with the district administration over the slapping of sedition charge against members of their community after an alleged attack on the Haryana deputy speaker’s car. The incident had taken place on Sunday and police had booked over 100 people, mostly unidentified, for sedition, obstructing public servants in discharge of their duty, murderous attempt on an elected representative and damaging public property.