The Enforcement Directorate (ED) today raided premises linked to businessman Navneet Kalra and his associates in connection with alleged hoarding and black-marketing of oxygen concentrators.<br />'' <br />''AIR correspondent reports that the searches are being conducted at various locations in the national capital under provisions of the Prevention of Money Laundering Act (PMLA).<br />'' <br />''ED had recently booked Kalra and others under the PMLA. The police had recovered more than 500 of these life-saving machines from a restaurant, owned by Kalra in Khan Market.<br />'' <br />''<span style="color: #222222;">Kalra was sent to 14-day judicial custody by a local court in Delhi on Thursday.</span><br />