Three suspects in a Cleveland shootout that killed a 61-year-old college instructor and a 15-year-old boy have pleaded not guilty to aggravated murder charges.

A Cuyahoga County judge on Friday ordered that 18-year-old Kassius Williams, 25-year-old Terrell Gray and 26-year-old Charles Walker continue to be held on $2 million bonds.

Walker's attorney says his client was driving a vehicle that Williams and Gray were riding in, but didn't have a gun.

Williams' and Gray's attorneys declined to comment.

Authorities say 61-year-old David Wilder was struck by a stray bullet while driving near the shootout between occupants of two vehicles.

Tywain Johnson, a passenger in the second vehicle, died after being shot three times.

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Wilder was an adjunct professor at Cleveland State University and at John Carroll University.