BEIRUT (AP) -- Rights activists visiting abandoned government prisons in the first Syrian city to come under rebel control have found torture devices and other evidence that detainees were abused there, Human Rights Watch said in a report Friday.
Raqqa, in eastern Syria, was overrun in late February by rebels fighting to topple President Bashar Assad. The rebels facilitated the New York-based group's access to facilities that had belonged to a government security agency and military intelligence in late April.
In Russia, Foreign Minister Sergei Lavrov defended his country's continuing arms shipments to Syria, saying they violate no international norms. His statement followed media reports claiming that Russia had recently delivered an advanced version of Yakhont anti-ship cruise missiles to Syria.
Russia has been one of Syria's strongest allies and, along with China, has vetoed three Western-backed resolutions proposed to the United Nations that aimed to pressure Assad to end the violence.
Lavrov, speaking after his talks with U.N. Secretary-General Ban Ki-moon in the Black Sea resort of Sochi, avoided specific comment on the Yakhont or other weapons deals, but insisted that the deliveries don't violate any international treaties.
Asked about Western criticism of Russia over its missiles sales to Syria, Lavrov said: "I don't understand why the media are trying to make a sensation out of it. We haven't tried to conceal that we have been supplying weapons to Syria under contracts signed earlier without violating any international treaties and Russian laws."
He insisted that Russia is providing Syria "primarily with defensive weapons, air defense systems." Lavrov said that such weapons shipments don't tilt the balance of power in the region and can't be used by the Syrian regime to fight the rebels in the country's civil war.
In Washington, State Department spokeswoman Jennifer Psaki told reporters that "it seems that these cases that were reported this morning have been previously reported." She added that "we're not aware of new shipments of these specific missiles."
Also Friday, a squadron of five Russian navy ships from the Pacific Fleet arrived in the port city of Limassol in the Mediterranean island of Cyprus, a Russian navy statement said. The Admiral Panteleyev destroyer, two amphibious landing vessels, a tanker and a tugboat have replaced a previous group of Russian navy ships that have sailed back home.
Russia has pledged to revive a permanent presence in the Mediterranean its navy had during Soviet times. Rotating squadrons of Russian navy ships have visited the area repeatedly over the past two years in what was seen as a demonstration of their military's global reach and a gesture of support for Syrian President Bashar Assad's regime.
Some observers said Moscow could use the amphibious landing ships included in most squadrons to evacuate equipment and military personnel from the Russian base in the Syrian port of Tartus, the only such outpost Russia has outside the Soviet Union.
Military experts say the deployments stretch the capability of the Russian navy, which has only started to recover from its post-Soviet decline and has only a few ships capable of taking part in such missions.
Human Rights Watch said its researchers found physical evidence that Syrians were tortured, including with a device which former detainees said was used to stretch or bend victims' arms and legs. The group also found documents indicating Raqqa residents were detained for legal actions like demonstrating or helping the injured.
Rights groups and opposition activists have long claimed that civilians have been detained arbitrarily, tortured, and sometimes have disappeared since the uprising against Assad's regime began. HRW's findings appear to be one of the largest discoveries of physical evidence bolstering those claims to date.
"The documents, prison cells, interrogation rooms, and torture devices we saw in the government's security facilities are consistent with the torture former detainees have described to us," said Nadim Houry, deputy Middle East director for HRW.
HRW has been documenting abuses on both sides of Syria's civil war during the 26 months of conflict.
The group says abuses by the Assad regime remain far more deadly, systematic and widespread, including attacks on civilians with indiscriminate battlefield weapons such as widely banned cluster bombs. But the rights group also says rebel abuses have increased in frequency and scale in recent months.
In Raqqa, the group's researchers inspected the State Security and Military Intelligence branches and three other detention centers formerly managed by Criminal Security, Political Security, and Air Force Intelligence. Government forces abandoned all these institutions, which are now controlled by the rebels, the group said.