A Rapid City contractor has tested positive for drugs while in a Pierre court pleading guilty to assault.

The Capital Journal reports that 30-year-old Jesse Lange pleaded guilty to felony assault of a worker for the grain bin business Lange operates with his father. His attorney, Brad Schreiber, says there was an element of self-defense in the motel room altercation last year.

But state Judge Mark Barnett, watching Lange, asked a court official to get a urine test kit and said Lange appeared high. An official said the test was positive for meth and ecstasy.

Lange's guilty plea couldn't be accepted, and he was jailed for violating the conditions of his bond for the assault charge. Barnett says another arraignment could be held once the drugs have left Lange's system.