The works were taken overnight without alarms being triggered, raising suspicion of a professional hit. The burglars struck at the MuMe regional museum in Messina where they made off with three of the remaining five panels that made up an altarpiece known as Polittico di San Gregorio Key points and original sources are listed below.

• The works were taken overnight without alarms being triggered, raising suspicion of a professional hit.S1

• The burglars struck at the MuMe regional museum in Messina where they made off with three of the remaining five panels that made up an altarpiece known as Polittico di San GregorioS2