A Maharashtra Navnirman Sena (MNS) corporator and his associates allegedly held three BMC engineers "captive" for nearly six hours today, at their office, to get a written assurance to address the city's potholes menace.

MNS corporator Sandeep Deshpande claimed that he, along with his party workers went to the G North ward office of the Brihanmumbai Municipal Corporation (BMC) in Dadar demanding a written assurance that potholes in the Dadar area be fixed at the earliest.