Omar had on Sunday accused the JK government of "brazenly" spying on him, a charge rejected by the ruling PDP.
Singh, MoS in the PMO, told reporters, "He (Omar) has blamed the state government and not the Centre. The Centre has nothing to do with it. It is something between him and the state government."
He was here to attend a 'meet the press' function organised by the Press Club Jammu.
"Mufti government brazenly spying on me. A journalist interviewing me for a national daily just got stopped right outside my gate by CID person," he had tweeted.
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"She (journalist) was asked who she was and what the purpose of her visit was! Seriously guys if you want to know just ask me, I couldn't care less if you do," he added.
Addressing Chief Minister Mufti Mohammad Sayeed, Omar wrote on the micro-blogging site, "Dear Mufti Sb, if you and your apparatchiks want to know what I'm up to pick up the phone and ask me. Please don't accost people outside my gate!" PDP had rejected the accusation, saying Abdullah was leveling the allegation just to "make news", and hit back by charging him of spying on PDP president Mehbooba Mufti and other leaders when he was the Chief Minister.
"It was a National Conference worker who was denied entry to Omar's residence who had asked a few questions to the lady.