The Kalahandi District Collector on Thursday ordered an inquiry into the collapsing of the spillway of the under-construction Reta Irrigation project at Narla.
A three-member technical committee headed by the DRDA Project Director and consisting the Chief Engineer (Construction) and Executive Engineer would investigate into the mishap.
The spillway had collapsed on Wednesday in which a labourer had died and another was critically injured and rushed to the District Headquarters Hospital.
The police have lodged a case suo motto and arrested project site in-charge Dusasan Nayak for negligence in duties. However, an engineer in charge of the project Upendra Maharana is on the run and police are trying to trace his whereabouts.
Police said Nayak would be produced in a local court on the day. It is alleged that due to a weak centering the spillway caved in.