0244 GMT April 21, 2021
The UN refugee agency condemned "collective reprisals against Syrians in the town" of Bsharre, saying many of the families fled in fear without taking their belongings, AFP reported.
"Collective punishment... for a whole community for an incident involving one individual is unacceptable," a UNHCR spokesperson said in a statement on Friday.
Many of those who fled the Christian-majority town said they were chased out by Bsharre residents after a Syrian on Monday was accused of shooting dead a Lebanese resident, sparking widespread tension and hostility.
Lebanon's official National News Agency reported forced evictions of Syrians in the wake of the murder, but Bsharre's mayor denied that the Syrians had left out of fear.
An AFP correspondent in Tripoli saw dozens of Syrian families gathering outside a UNHCR building in the northern city.
A group of young men in Bsharre "assaulted us, threatened us and started a fire" in the house, Umm Khaled, a 31-year-old Syrian mother of five told AFP.
"We picked up our children and ran away to Tripoli," located more than 40 kilometers (25 miles) east, she said.
Yassin Hassan, a 30-year-old Syrian who had lived in Bsharre for years, said he was beaten by a group of men.
"We ran away... without taking anything from our homes," he told AFP.
Tripoli is among the most welcoming destinations in Lebanon for refugees.
Lebanon, which is grappling with an economic crisis, says it hosts some 1.5 million Syrians, including around one million registered as refugees with the United Nations.
UNHCR said it received "a large number of refugees from Bsharre" in its Tripoli reception center.
They were encouraged to find alternative housing but those with nowhere to stay were moved to shelters, a spokesperson told AFP.
The reasons behind the murder that fuelled anti-Syrian sentiments in Bsharre remains shrouded in mystery.
The Syrian suspect in question has handed himself over to authorities, the army said.
A judicial source said investigations were still underway.
The mayor of Bsharre says the town is home to nearly a thousand Syrians.
Authorities have called on refugees to return to Syria even though rights groups warn that the war-torn country is not yet safe.