One of his daughters, Kathleen “Kick” Kennedy, described in a 2012 article how her father cut the head off a dead whale that had washed ashore and bungee-corded it to the family’s car.

The 70-year-old former presidential candidate did not go into detail about the decapitation of the whale, but his daughter previously described how he had used a chainsaw to cut the head off a dead whale 30 years ago.

The National Oceanic and Atmospheric Administration confirmed on Monday it is investigating Robert F. Kennedy Jr. for allegedly decapitating a dead whale carcass and transporting it home two decades ago.

Kennedy’s whale saga began after a 2012 interview with his daughter resurfaced where described her father decapitating the dead marine animal and driving it across state lines.