The allrounder Thisara Perera will captain Sri Lanka in Chandimal's absence.
Bangladesh captain Mahmudullah, meanwhile, has been fined 20% of his match fee, and the rest of the team 10%, after the side was ruled to have fallen one over short of the time target.
According to the ICC's code of conduct, a team falling short by up to and including two overs is said to have committed a "minor over rate offence", and a "serious over rate offence" if it is short by more than two overs. The team's captain receives two suspension points for a serious over rate offence, which equates to a ban from one Test, two ODIs or two T20Is, whichever comes first.
Chandimal pleaded not guilty to the offence, and Broad announced his verdict after a hearing on Sunday afternoon, involving the match officials and Sri Lanka's team management. If Sri Lanka commit another serious over-rate offence in a T20I within 12 months of this offence with Chandimal as captain, he will receive between two and eight suspension points for committing a second offence.
(Except for the headline, this story, originally published by espncricinfo.com has not been edited by SLM staff)