A former Atlanta police officer who was involved in a botched raid that ended in the shooting death of a 92-year-old woman has pleaded guilty to federal conspiracy charges.

Arthur Tesler entered the plea Thursday. He faces a sentence of more than 10 years in prison and a fine of up to $250,000.

In May, Tesler was sentenced to 4 1/2 years in prison on state charges for lying to investigators about the botched drug raid that ended in the death of Kathryn Johnston.

Tesler was the only officer to face trial in the raid, which led to an outcry from civil rights activists and forced a shakeup of the Atlanta police department.

Johnston died in a hail of police bullets after narcotics officers burst into her northwest Atlanta home the night of Nov. 21, 2006, using a special no-knock warrant to search for drugs.