A piece of heavy construction machinery toppled over at a worksite in Tanjong Pagar on Tuesday evening.

The Singapore Civil Defence Force (SCDF) was alerted to the incident at about 7.10pm. The Straits Times understands that one worker was operating what is believed to be a crane when it toppled to its side. An SCDF spokesman said that no one was injured.

The site, located between Robinson Road and Cecil Street, is where Far East Organization is constructing the 31-storey SBF Center, a new development that will comprise offices, medical suites, and food and beverage outlets. Workers there told The Straits Times that they were instructed not to divulge any details about the incident.

Engineer Ms Kerry Devlin, 27, was watching TV in her 34th floor residential unit across Cecil Street when she heard a loud crash.

"I rushed to the window and saw a guy climbing out of the crane using a ladder. He seemed okay," she told The Straits Times. She added that there were about 20 people gathered around the toppled crane. Ms Devlin then tweeted a photo of the worksite, which showed the crane precariously perched on the edge of a huge hole in the ground.

The latest incident comes two days after a worksite accident on Sunday morning claimed the life of a 23-year-old Indian national, who was pinned between a boom lift and a crawler crane in Jurong. There have been at least 13 workplace fatalities since the start of this year, and at least seven worksite accidents in January alone.