Ernakulum: Four persons among them three officials including TO Sooraj, Public Work Department Secretary arrested over Palarivattam over bridge corruption case. Sumit Goyal, RDX Projects MD, Benny Paul, KITCO former MD, PD Thakachan, RBDCK Assistant Manager are the other persons arrested. An FIR over the anomalies on Palarivattam over bridge marking Sumit Goyal as first accused was submitted at Vigilance Court in Moovattupuzha. 17 persons were suspected to be involved in the corruption case over Palarivattam over bridge. Benny Paul, KITCO former MD, who entrusted Nagesh consultancy to prepare the blue print of the project, The RBDCK official who implemented the project is termed as accused in the case.