Around 12 feet area of a 30-feet-wide road on the west side of the building developed cracks in the morning disrupting gas, water and sewerage supply in the area.

However, no one was injured.

Witnesses said around 40 pillars on the west side of the under-construction building and a portion of the western road collapsed with a big bang at around 6:30am.

"Hearing a huge noise, I woke up early in the morning and hurriedly came out fearing an earthquake," said Akbar Hossain Arif, a security guard of a nearby building.

According to local sources, piling work was going on for the construction of a twenty-storied building on one bigha of land at 37/2 Puranapaltan.

Suddenly a portion of the road in front of the under-construction building caved in, causing cracks in gas, water and sewerage pipelines.

Some of the nearby buildings are now in danger and in a vulnerable state.

The building was being constructed by Pioneer Builders Limited which started its piling work three months back.

None was available for interrogation after the incident.

Titas gas authorities cut off the gas supply to the area to halt emission of gas leakage through cracks in the gas pipeline.