Bangladesh, July 17 -- A cleaning worker who went missing after entering a drain to clean it in Old Dhaka has still not been found more than 24 hours later.

Advertisement The worker went missing on Thursday afternoon in Nalgola of Ward No. 30, according to a bdnews24.com report.

Local resident Mojahidul Islam said several sanitation workers had been cleaning the drain since Thursday morning.

Speaking to bdnews24.com on Friday afternoon, he said, "A cleaning worker went down a manhole to clean it but went missing due to the toxic gas and hazardous conditions inside.

"About an hour after he entered the manhole, people began searching for him. Even by this afternoon, he had not been rescued."

Rashedur Rahman Russell, sanitation inspect...