The by-electon of Purnea assembly seat in Bihar will be held on June 25. AIR Patna correspondent reports that the by-election was necessitated following the murder of BJP MLA Raj Kishore Keshari. According to the Election Commission, the notification of this seat will be issued on June 1. The last date of filing of nomination paper will be on June 8 and scrutiny of nomination papers will be on the next day.