Turkey's Deputy Prime Minister Bekir Bozdag has said Syrian President Bashar al-Assad's comments over the downing of a Turkish jet last month were trying to connect with public opinion.
He also refuted suggestions that the aircraft which shot down a Turkish plane was flying in air space often used by Israel.
It is nothing new that Israel uses these corridors, they constantly use them," he told Turkish state television. If the Syrian administration says it shot it, thinking it was an Israeli plane, then they would have shot many Israeli planes down by now.
The Human Rights Watch report documents more than 20 distinct torture methods used by the security and intelligence services.
A 31-year-old detainee who was held in Idlib governorate in June described to Human Rights Watch how the intelligence agencies tortured him in the Idlib Central Prison.
They forced me to undress. Then they started squeezing my fingers with pliers.
They put staples in my fingers, chest and ears. I was only allowed to take them out if I spoke. The staples in the ears were the most painful.
They used two wires hooked up to a car battery to give me electric shocks. They used electric stun-guns on my genitals twice. I thought I would never see my family again. They tortured me like this three times over three days.
Mr Hague said the UK would work with EU partners to impose sanctions on those responsible to help bring an end to the violence.
The report, Torture Archipelago: Arbitrary Arrests, Torture and Enforced Disappearances in Syria's Underground Prisons since March 2011, includes maps locating detention centres, video accounts from former detainees and sketches of torture techniques.
Almost all the former detainees interviewed by Human Rights Watch said they had been subjected to torture or witnessed the torture of others during their detention.
Foreign Secretary William Hague said a report by Human Rights Watch that identified torture and atrocities in Syria sounded a clear warning that there was "no hiding place" for those responsible for such crimes.
The rights organisation has carried out more than 200 interviews since the beginning of anti-government demonstrations in the country in March last year.
Accounts from former detainees and defectors have identified the locations, agencies responsible, torture methods used and, in many cases, the commanders in charge of 27 detention facilities run by Syrian intelligence agencies.
Human Rights Watch said the systematic patterns of ill-treatment and torture it had documented clearly pointed to a "state policy of torture and ill-treatment", which constituted "a crime against humanity".