A suicide bomber targeted a pop concert held at Manchester Arena on Monday, with a further 64 people injured.
The Stamford Bridge club, who face Arsenal in the FA Cup final on Saturday, issued a statement on Wednesday confirming their plans for a parade to mark their top-flight title triumph had been shelved.
"Everyone associated with Chelsea Football Club offers our heartfelt condolences to those affected by Monday's terror attack in Manchester. Our thoughts go out to all the victims, and their families and friends," the release read.
