4 bodies found during search of sunken yacht off Sicily

The transcript covers the ongoing search and recovery efforts for missing passengers of a luxury yacht that sank off the coast of Sicily. Initially, six people were missing, but four bodies have been recovered, including British entrepreneur Mike Lynch and his daughter. Two individuals remain unaccounted for. The UK's Marine Accident Investigation Branch will investigate the incident, although they are not currently involved in the search operations. The yacht was British-flagged, prompting the investigation into the circumstances of the storm that led to the sinking.

What details are known about the yacht's sinking and the ongoing search efforts?

What is the involvement of the British investigation in the search and recovery operations?