The Australian Federal Police have warned offenders there are serious consequences for illegally importing 1,4 Butanediol - commonly known as bute, a harmful substance that is linked to sexual assaults and overdoses. Earlier this year, bute was defined as a border controlled drug. This change means those convicted of illegally importing bute will face a maximum penalty of life imprisonment. More than 4200 litres of bute have been seized in Sydney following the change in legislation.