Himachal Pradesh Chief Minister Virbhadra Singh on Wednesday said the Enforcement Directorate's action to attach his son Vikramaditya Singh's assets in New Delhi was uncalled for."It is not being done by court orders but suo motu action of the ED under political pressure from their political bosses," the chief minister said in a statement here.Vikramaditya Singh is the state Youth Congress president.Official sources said assets worth over Rs.7 crore were attached by the ED in the money laundering case against the chief minister.The ED filed the case against the Congress leader under the Prevention of Money Laundering Act after taking cognizance of a criminal complaint filed by the CBI.The Delhi High Court on March 16 refused to grant any interim stay on the money laundering case proceedings against the chief minister and others.The judge issued a notice to the ED, seeking its response before May 31 on Virbhadra Singh's plea seeking a stay on the proceedings and quashing of the money laundering case against him.