The group have now issued a statement confirming that shows in Italy, Germany and Switzerland - due to take place at the end of June and beginning of July - will be moved to a later date.
It was also revealed that the band's lighting set-up was "destroyed" in the accident, which caused considerable damage to their valuable audio equipment too.
"As you will probably have heard the roof over the stage collapsed at our show in Toronto killing crew member Scott Johnson and injuring three other crew members," read the statement, posted on the band's website.
"The collapse also destroyed the light show - this show was unique and will take many weeks to replace. The collapse also caused serious damage to our backline, some elements of which are decades old and therefore hard to replace.
"Whilst we all are dealing with the grief and shock ensuing from this terrible accident there are also many practical considerations to deal with & consequently we have to try and reschedule the [Italian, German and Swiss] shows."