LAST year's Ladbrokes St Leger hero Encke was the highest-profile name among seven further Mahmood al-Zarooni-trained horses to test positive for anabolic steroids.
Following the former Godolphin trainer's eight-year ban for administering banned drugs to 15 horses in his care, the British Horseracing Authority tested every inmate at his Moulton Paddocks yard in Newmarket.
Those checks produced positive tests for another seven horses, including the Doncaster winner, with the steroid stanozolol found to be in their blood samples.
Encke will now be suspended from running for six months, meaning he cannot return to action until October 29, when only a few weeks of the Flat season remain.
The horse made great strides in 2012, graduating from a Sandown handicap via Group-race places at Goodwood and York to foil the Triple Crown bid of Aidan O'Brien's Camelot.