BEIRUT: A Lebanese army unit clashed with a group of armed Syrian nationals at the border on Friday as the soldiers attempted to “close an illegal crossing” in the Maarboun-Baalbek area of eastern Lebanon.

The Syrians were trying to forcibly reopen the crossing with a bulldozer, the army said. Soldiers fired warning shots into the air and Syrians responded by returning fire.

The “armed Syrians fired at the Lebanese soldiers, injuring one and sparking a clash between both sides,” the army command added. “Artillery shells were used” and other Lebanese army units in the area also responded with strict military measures, it added.

Subsequently, “reinforcements from the army’s mobile regiment arrived in the area, following the retreat of the armed Syrians, some of whom sustained injuries,” and the illegal crossing remained closed.

Maarboun is a town in Baalbek-Hermel governorate, and a natural crossing point between the two countries. However it is an illegal crossing mainly used by smugglers and human traffickers. The surrounding area is known to be pro-Hezbollah.

The incident at the illegal crossing coincided with the actions of Syrian authorities on Friday morning that prevented hundreds of Lebanese from crossing the border between Masnaa in Lebanon and Jdeidet Yabous in Syria.

The Syrians suddenly imposed new conditions on Lebanese visitors, including requirements that they have a hotel reservation and at least $2,000 in cash. People visiting Syria for surgery or other medical care must now have proof of an appointment and a Syrian sponsor who can confirm their identity. A valid residence permit for the stay in Syria is also required. Lebanese authorities imposed similar rules on Syrians entering Lebanon after the civil war in Syria began more than a decade ago.

Buses carrying Lebanese passengers who intended to visit Syria were forced turn back at the border as a result of the new Syrian rules.

Lebanon’s General Security Directorate decided to “prohibit any Lebanese from entering Syria through illegal crossings between both countries in Bekaa and the north, pending clarity during this stage,” a source from the agency said.

After the fall of President Bashar Assad and his regime in Syria in early December, the directorate held two meetings with officials from the new Syrian administration to discuss the regulation of movement between the two countries.

Though media delegations, politicians and civilians have crossed into Syria in recent days, Lebanese authorities have tightened security at land crossings, following similar actions at Rafic Hariri International Airport in Beirut.

Normal operations at the airport resumed on Friday after an incident on Thursday night involving an aircraft belonging to Iranian airline Mahan Air. Airport security decided to conduct a thorough inspection of all passengers when the plane landed, including luggage belonging to diplomats on board. The diplomats protested and chose instead to leave their luggage at the airport. It was taken to a storage facility for inspection the following day using scanners.

Footage circulated on social media apparently showing young men on motorcycles heading to the airport to protest against the measures. It was believed the heightened security was motivated by concerns that passengers might be carrying money for delivery to Hezbollah. A second Iranian plane that landed on Friday faced similar security measures.

Lebanon’s interior minister, Bassam Mawlawi, described the move as a routine procedure and added: “What the airport security is doing aims to protect Lebanon and the Lebanese people. We are enforcing the law, protecting the airport and safeguarding all of Lebanon because it cannot withstand any new aggression.”

The decision covered the inspection of all luggage, he said, including that carried by diplomats.

The heightened measures drew criticism from the vice president of the Supreme Islamic Shiite Council, Sheikh Ali Al-Khatib. During his Friday sermon, he called on the interior minister “to demonstrate his heroism against the enemy, not against those who made sacrifices to defend Lebanon’s sovereignty.”

Also on Friday, US Maj. Gen. Jasper Jeffers, head of the international committee monitoring the implementation of the ceasefire agreement between the Israeli army and Hezbollah, toured Khiam, where the Lebanese army was deployed after the withdrawal of the Israeli forces. He was accompanied by Brig. Gen. Tony Faris, commander of the Lebanese army’s 7th Brigade.

Their visit came as Israel continued to face criticism for violating Lebanese sovereignty, including reconnaissance flights over southern Lebanon, extending as far as the southern suburbs of Beirut. Israeli forces were also accused of demolishing houses and roads in Dhayra and Jebbayn, and there were renewed warnings to residents of southern Lebanon not to return to homes in border areas until further notice.

There was a heavy presence of UN Interim Force in Lebanon forces along the Bayada-Naqoura road. The Lebanese army has placed concrete barriers on the road to Naqoura, preventing people other than UNIFIL personnel from entering. The UN force’s headquarters is located there.

The Lebanese army said it was surveying military remnants in Naqoura following the withdrawal of Israeli forces from the town on Thursday. When this task is complete, Lebanese forces will be redeployed to the area, it added.