<p>Two people are dead and four others injured after a wreck involving a wrong-way driver that closed Georgia 400 for more than five hours.</p><p>The accident happened about 8 p.m. yesterday in Alpharetta (just south of Old Milton Parkway). It closed the highway in both directions.</p><p>Alpharetta Police Officer Justin Wilson says a vehicle was traveling southbound when it apparently crossed the median and entered the northbound lane, striking two oncoming vehicles.</p><p>Three vehicles were involved in the wreck -- two pickup trucks and a sport utility vehicle.</p><p>Investigators still are trying to determine details of the accident.</p><p>Two of the injured have been taken to Grady Memorial Hospital in Atlanta, and the two others were taken to Atlanta Medical Center.</p><p>Authorities have NOT released the names of those killed. (WSB Radio, Mark Alewine)</p>