Delhi's Deputy Chief Minister Manish Sisodia, summoned for questioning by the Central Bureau of Investigation in the liquor policy case, directed a jab at the Centre this evening, pointing to the law-and-order situation in the national capital where a series of murders have taken place recently. "I request you to please pay some attention to this matter too," read his letter to Governor VK Saxena, who had given clearance to the investigation in the liquor case.