In response, Mr Khan's spokesman said the mayor's thoughts were with the victims' families and he "is not going to waste his time responding to this sort of tweet."
Afhayeenka Mr Khan ayaa sheegay in maayarku uu tacsi u dirayo qoysaskii ay dhibtu gaartay oo uusan "waqti ku luminayn in uu ka jawaabo warka noocaas ah ee twitter-ka lagu qoray."