The Asian Championship silver medallist Deepak was in complete control of the proceedings throughout the match. He k was swift in his movement inside the ring and his speedy footwork did not allow his Bulgarian opponent any chance to score.

With this win, Deepak became second Indian after Naveen Boora (69kg) to seal a spot in the last four thus assured second medal for country.

Both the Indians will play Uzbekistan boxers in their respective last-4 clash . While Deepak will face a strong challenge from Rio Olympic champion Shakhobidin Zoirov, Boora will be up against Asian Games gold medallist Bobo-Usmon Baturov.

Earlier Manjeet Singh lost his +91kg quarter-final bout against Armenia's Gurgen Hovhannisyan.

Meanwhile, women boxers Jyoti Gulia (51kg) and Bhagyabati Kachari (75kg) suffered 5-0 defeats in their quarter- final bouts.

Gulia lost to Romanian boxer Lacramioara Perijoc, Kachari also went down against the world championship bronze medallist Naomi Graham of USA.