RTHK understands that police made at least five arrests on Friday morning in connection to their investigation of an accident at a concert by the band MIRROR.

Two dancers were seriously injured when a big screen fell onto the stage at the gig at the Coliseum in Hung Hom in July.

It's understood four men and one woman connected to contractors working on the event have been arrested.

A government inquiry into the accident is expected to release its report as soon as Friday.