Punjab Pradesh Congress Committee chief Amarinder Singh on Friday condemned the attack on journalists at a public rally of Aam Aadmi Party MP Bhagwant Singh Mann on Thursday.He demanded that Mann must be booked for rioting and assault, and referred for medical check up to know his mental fitness for public appearances."These are the signs of utter frustration on part of the AAP leaders like Mann, who seem to have lost their mind over the developments that have taken place in their party," Amarinder Singh said in a statement.He suggested that the Sangrur MP should be referred for medical examination before being pronounced fit to go to and address public functions.Taking a dig at the AAP leader and Delhi Chief Minister Arvind Kejriwal for sacking his minister Sandeep Kumar, Amrinder said he was sacked for diverting attention from the Punjab crisis."Kejriwal deliberately sacked Dalit minister Sandeep Kumar now as he wanted to divert the public attention from the ongoing crisis in Punjab," he said.