(CNN) - Sen. John McCain visited rebels in Syria on Monday, his communications director confirmed to CNN, making the Arizona Republican the highest ranking elected official from the United States to visit the war-torn country.
Brian Rogers confirmed a report that originally appeared on The Daily Beast, which indicated McCain entered Syria through Turkey, and remained in the country for several hours.
While in Syria, McCain met with Gen. Salem Idris, the leader of the Supreme Military Council of the Free Syrian Army, according to Mouaz Moustafa with the Washington-based Syrian Emergency Task Force that was involved in planning the trip. He spent about an hour meeting with Free Syrian Amry commanders from various parts of the country including Aleppo, Homs, and Idlib.
McCain is the leading voice in Congress for a greater U.S. role in ending Syria's civil war, which has been waged for more than two years. He has suggested establishing "safe zones" for Syria's rebels and taking out the regime's air assets, along with providing lethal weapons to Syria's opposition.
In their meeting with McCain, leaders of the Syrian rebel forces pressed the United States to provide them with weapons to continue their fight against Syrian President Bashar al Assad. They also called for establishing no-fly zones and for airstrikes against Assad's regime, according to the Daily Beast's report.
His visit came shortly before U.S. Secretary of State John Kerry was scheduled to meet in Paris regarding Syria with Russian Foreign Minister Sergey Lavrov. For months during the Syrian war, Russia appeared to be supporting the country's president, Bashar al-Assad. But that tide seems to be turning, at least gaining some wiggle room for the Russians to help broker an end to the violence.
Moustafa of the Syrian Emergency Task Force called McCain's visit "an incredibly important trip and trips like this need to happen more frequently.
"It was very important because one of the biggest arguments against supporting the opposition is not knowing who they are. So being able to sit face-to face with these commanders brings a much higher level of confidence in who they are," he said.
The U.N. estimates that more than 70,000 Syrians have been killed since anti-government protests in March 2011 led to a fierce government crackdown, an armed uprising and a bloody civil war. The war has uprooted a quarter of the country's 22 million civilians.
Republicans and Democrats alike have called on President Barack Obama to ramp up support for Syrian rebels, who now receive nonlethal aid like food and medicine from the United States. In early April that aid was stepped up to include equipment such as body armor, night vision goggles and other military equipment that is considered defensive in nature.
Long an advocate of a more pronounced American effort in Syria, McCain has previously visited camps in Jordan that have harbored massive waves of Syrian refugees. He described one of those camps last month on NBC's "Meet the Press."
"This woman who was a schoolteacher said, 'Sen. McCain, do you see these children here? They're going to take revenge on those people who refused to help them,' " McCain recalled. "They're angry and bitter. And that legacy could last for a long time too, unless we assist them."
But others, including lawmakers from both parties and Obama's administration, have said American arms flowing into Syria could end up in the hands of terrorists.
Officials also say that Iranian-backed militias and Hezbollah units could be operating in the country and potentially infiltrating the rebel opposition.
- CNN's Salma Abdelaziz contributed to this report