Stephan Buckley, 55, of Andover, Mass., faces charges in connection with fatal crash in Dunbarton on March 11, 2017.
Stephan Buckley, 55, of Andover, Mass., faces charges in connection with fatal crash in Dunbarton on March 11, 2017.

A Massachusetts man has pleaded not guilty to charges stemming from a March car crash in Dunbarton that killed a St. Paul’s staff member.

Stephan Buckley, 55, of Andover, Mass., was charged with misdemeanor-level vehicular assault and simple assault, and violation-level negligent driving, speeding and failure to stop at a stop sign, according to Concord district court documents. He entered a “not guilty” plea during an arraignment at Concord district court on Monday.

Police say Buckley struck a vehicle with his Ford F-250 at the intersection of Concord State Road and Stark Highway North, known as “Page’s Corner,” on March 11. He allegedly ran a stop sign and crashed into a Toyota RAV4 operated by Mike Whittier of Dunbarton as he was crossing through the intersection.

Whittier, 60, sustained broken ribs and a ruptured spleen in the crash, and he later died on March 19 at Concord Hospital from complications arising from those injuries.

Buckley is currently out on $2,500 personal recognizance bail. He is scheduled to appear in court for a conference on Aug. 31.