The accident took place at around 5.30 a.m., reports Xinhua news agency.
A bus ferrying Indonesian and Nepalese workers, had stopped on the left side of the road after an engine problem. Another bus failed to brake in time and rammed into it, the police said.
The two buses were carrying factory workers from Sony and Plexus, which have manufacturing business in the Penang state.
Out of the 33 injured, 23 sustained serious injuries, the police added.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.