''As is standard procedure on Crossrail following an incident - in this case a cable strike incident - Crossrail has suspended any activity which involves breaking ground such as piling or utility excavation until we are fully confident that it safe to proceed. Such suspensions usually last for several days''
More top news
Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.
The family of Oliver Dearlove urged people to "think again" before using their fists, as the man who killed him began a six-year jail term.
London Fire Brigade took Southwark Council to court on four charges in relation to safety breaches at Lakanal House in Camberwell.