A Sydney construction company boss targeted customers in a three-month "extreme course of threatening and violent behaviour" to discourage them from taking legal action over his work.

Bill Issa lobbed Molotov cocktails at five homes and businesses across Sydney and ambushed an Ultimo restaurant owner with two other men, one of them armed with knuckle dusters. Issa beat the man severely with a metal torch while the other two laid in to the restaurateur, having cornered him…