A 15-year-old suspect in the shooting death of a Manhattan teenager has pleaded not guilty.

Cole Drake entered the plea Monday to first-degree murder and aggravated robbery in the death of 14-year-old Tyler Dowling. Drake is being tried as an adult.

Dowling, a Manhattan High School freshman, was found dead last April in a field. Drake is also accused of taking items from Dowling, including his cell phone.

The Manhattan Mercury reports Drake’s bond was set at $500,000.

His trial is scheduled to begin on Sept. 24.