A leaked Australian Federal Police memo suggesting anti-drug operations have suffered because of the need to protect Malcolm Turnbull's mansion has sparked extraordinary scenes in Parliament, including accusations of collusion between Labor and the ABC.

The memo, seen by Fairfax Media, was written by a senior AFP officer in NSW and alleged high-level operations were compromised due to obligations to protect its own facilities and the Prime Minister's Point Piper residence, which he uses instead of the official prime ministerial residence at Kirribilli.

Consequentially, the AFP was unable to investigate a 1.6 tonne cocaine importation ring, leaving it to be handled overseas, among 23 investigations that had to be moved or transferred due to lack of capacity.

The internal July memo claimed the situation in Sydney was at tipping point, with officers falling asleep on duty due to fatigue associated with excessive overtime.