Clue from 2011
"He ran several marathon PBs in a row, broke 14 for the first time over 5000 m, then in the freezing rain of last year's [2010] Tokyo Marathon took 5 minutes off his PB to finish 4th in 2:12:36, a major accomplishment."
http://japanrunningnews.blogspot.com/2011/02/mekonnen-wins-tokyo-marathon-amateur.html