A Montgomery County Police officer walks by a minivan splattered with blood after a shooting at a Mobil gas station in Aspen Hill, Md.

For three weeks in October 2002, residents of the Washington, D.C., area lived under a cloud of fear as an unknown sniper embarked on a seemingly random spree, killing 10 people and wounding three others.

As victims were shot down at gas stations, restaurants and even in a schoolyard, the threat left many on guard during their daily routines. Two suspects were taken into custody in connection with the case on Oct. 24, and when a rifle in their possession matched the one used in the slayings, authorities were confident that the manhunt - and the tragic attacks - had ended.

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