RIO DE JANEIRO, (Pakistan Point News - APP - 13th Augst,2016) - Ethiopian middle-distance star Genzebe Dibaba coasted through heats of the women's 1500m on Friday. The world champion, whose Somali coach was arrested in Spain in June as part of an investigation into drug trafficking, clocked a pedestrian 4min 10.61sec, more than 20sec slower than her own world record. Dibaba's teammate Dawit Seyaum, world junior champion in 2014, headed the times with 4:05.33. Also qualifying for Sunday's semi-finals were Britain's Laura Weightman and American Shannon Rowbury. The duo also competed in the 1500m at the 2012 London Games from which six of the top nine finishers have since been banned for doping.