YANGON - A BLAST at a railway station in Myanmar's main city of Yangon injured one man on Sunday, police said, while witnesses reported hearing an explosion and seeing smoke billowing from the station.

A Yangon police officer told AFP that there was a blast near the bathrooms in the station serving Myanmar's former capital, but could not confirm what had caused the explosion.

'A man who was washing was slightly injured,' he said.

'We saw some smoke and we heard the sound, it was like a car tyre exploded,' said one vendor, who wished to remain anonymous. 'I have never seen anything like this before.'

Authorities swiftly cordoned off the area, with traffic police, security officials and soldiers blocking access to the site of the incident, where people gathered to try and find out more information.

Military-run Myanmar has been hit by a series of small blasts over the last few days.

A woman was killed on Friday at the railway station serving the remote new capital of Naypyidaw, while a man was killed and four people were injured Saturday in a blast in central Myanmar.

State-run newspaper the New Light of Myanmar on Sunday blamed both of those incidents on the Karen National Union (KNU), an armed ethnic rebel group battling the junta, and said the two who died were insurgents. -- AFP