Scaffolding for the under-construction Damansara Shah Alam Highway (Dash) collapsed this evening, injuring two workers.

The collapse occurred near the Kota Damansara exit of the North Klang Valley Expressway (NKVE).

Dash's developer Prolintas, in a statement tonight, said it has issued a stop-work order for the site.

Earlier, the Fire and Rescue Services Department said concrete and scaffolding had fallen from a height of 12m.

The two migrant workers were reportedly working beneath the under-construction highway when it collapsed.

The Fire and Rescue Services Department said the duo suffered light injuries from being hit by debris and have been sent to the Sungai Buloh Hospital for treatment.

This is the third highway-related accident this year.

On March 3, a trailer crashed into metal scaffolding at the Sungai Besi-Ulu Kelang Expressway (Suke), causing an unfinished bridge to collapse onto a moving van. Two died and three were injured.

On March 22, a crane working on the Suke highway collapsed, killing three people.

Prolintas is also the developer for Suke.