A man admitted a firebomb attack on the constituency office of the Grantham & Stamford MP Nick Boles when he appeared before Lincoln Crown Court today (Fri).
Paul Leverseidge made a device by taping coins to a number of fireworks.
Leverseidge, who lived in a flat opposite the office in North Street, Bourne, went on to throw the home-made firebomb at the building.
Only minor damage was caused and no-one was injured. Mr Boles was not at the building at the time.
Emergency services were alerted after neighbours reported two small explosions just after midnight on June 10.
Bomb squad officers were called out and the area was sealed off for several hours before the all-clear was given.
Leverseidge, 24, of Marquess Court, Bourne, admitted a charge of having an explosive substance on June 10.
Judge Sean Morris adjourned sentence for the preparation of a probation report and a psychiatric assessment.
Leverseidge, who has no previous convictions, was remanded in custody to appear back in court next month.