John Allen Muhammad (pictured) and his teenage accomplice, Lee Boyd Malvo, spread terror in the US as they embarked on a killing spree in 2002, which ultimately left 10 people dead across three states. Photo / AP Expand

John Allen Muhammad (pictured) and his teenage accomplice, Lee Boyd Malvo, spread terror in the US as they embarked on a killing spree in 2002, which ultimately left 10 people dead across three states. Photo / AP

JARRATT, Virginia - John Allen Muhammad, the mastermind of the sniper attacks that terrorised the US capital region for three weeks in October 2002, has been executed.

Muhammad died by injection at 9.11pm local time (3.11pm today NZST) at Greensville Correctional Centre in Jarratt, prison spokesman Larry Traylor said.

He said Muhammad had no final statement and that Traylor didn't hear him utter any words during the execution.

Muhammad was executed for killing Dean Harold Meyers, who was shot in the head at a Manassas gas station during a spree that left 10 dead across Maryland, Virginia and Washington, D.C.

The shootings terrorised the region, as victim after victim was shot down while doing everyday chores: going shopping, pumping gas, mowing the lawn. One child was shot while walking into his middle school.

"We extend our condolences not only to the families and loved ones of the victims, but also to the family and loved ones of John Allen Muhammad," said J. Wyndal Gordon, one of Muhammad's attorneys.

"It's just a tragic situation all around."

Earlier, Gordon had described Muhammad as fearless and insisted he was innocent.

"He is absolutely unafraid and he will die with dignity - dignity to the point of defiance," Gordon said.

People stayed indoors. Those who did go outside weaved as they walked or bobbed their heads to make themselves a less easy target.

The reign of terror ended on October 24, 2002, when police captured Muhammad and his teenage accomplice, Lee Boyd Malvo, as they slept at a Maryland rest stop in a car they had outfitted for a shooter to perch in its trunk without being detected.

Muhammad and Malvo also were suspected of fatal shootings in other states, including Louisiana, Alabama and Arizona. Malvo was sentenced to life in prison.

The US Supreme Court turned down Muhammad's final appeal on Monday and Governor Timothy M. Kaine denied clemency yesterday.

Cheryll Witz was one of several victims' family members who traveled to Virginia to watch the execution. Malvo confessed that he shot her father, Jerry Taylor, on a Tucson, Arizona, golf course in March 2002 at Muhammad's direction.

"He basically watched my dad breathe his last breath," she said.

"Why shouldn't I watch his last breath?"

Muhammad met with family members in the hours before his execution but did not have a spiritual adviser, Traylor said.

- AP