Union minister Anurag Thakur on Sunday hit out at the CPI(M)-led LDF government for registering a case against Enforcement Directorate officials probing the gold smuggling case,saying any attempt to hamper it by such acts 'clearly shows what is troubling them".

"If they try to hamper progress of the ongoing investigation by filing a police case against ED officials, it clearly shows what is troubling them.

"... They are unable to answer questions raised by these officials", the union minister of state for Finance and Corporate Affairs told reporters here.