Nine people, including two Chinese giants, were killed and two others injured on Thursday after a crane collapsed on a construction site in Nairobi. Workers were trying to dismantle the crane when it crashed, said ZJCC, the Chinese construction company behind the project.

Among the dead are seven Kenyans and two Chinese. Two others were injured.

The cause of the collapse was not immediately clear.

Eyewitnesses said they heard people scream when the crane crashed into the ground.

“We had lunch when we heard things fall and thought part of the building was going to collapse,” 27-year-old construction worker Michael Odhiambo told AFP.

“When we got there, we discovered that a crane had caught and crashed,” he said, adding that one of the workers escaped with his life thanks to a seat belt.

Josephine Matere, a grocer, described seeing the green crane swinging wildly as people clung to it desperately and their colleagues watched in horror.

“They screamed and watched their colleagues fall,” she said, showing a video of the incident.

(With input from the agency)