( CNN ) -- Bloody clashes between pro- and anti-Syrian regime fighters raged on early Sunday in Tripoli , Lebanon , a day after the deadliest outburst of violence there in recent weeks indicated Syria 's turmoil continues spilling across borders . Twelve people were killed and about 50 were wounded in fighting on Saturday , the state-run National News Agency reported . The clashes continued early Sunday morning , killing at least one person , NNA said . But government intervention appears to have calmed the situation . Syrian president condemns Houla massacre , rejects accusations . After meeting with leaders from the different factions involved in the clashes , Interior Minister Marwan Charbel announced that national security forces would enter the area to enforce a cease-fire Sunday morning . Tripoli residents and the NNA news agency said Sunday that Tripoli was quiet after the morning clashes , suggesting fighters apparently adhered to the cease-fire . At one point on Saturday , a continuous stream of rockets hindered national security forces ' attempts to secure the area , the news agency said . One rocket exploded over a well-known castle in the city , while another landed some distance away . Prime Minister Najib Mikati went to Tripoli to assess the security situation , state news reported . The sectarian violence in Tripoli -- which is on the Mediterranean coast , about 50 miles from Homs , Syria -- mirrors the tensions in its neighboring nation . Clashes in both nations pit Sunnis , who make up the majority of the Syrian opposition and population , against Alawites and other Shiites , who are dominant in Syrian President Bashar al-Assad 's government . Sunnis are the majority in northern Lebanon , where Tripoli is located and where anti-Assad factions are relatively strong . The Syrian president , meanwhile , has more support in southern Lebanon and among members of the powerful Shiite militant and political group Hezbollah , which is considered a terrorist organization by U.S. authorities . The recent fighting is not the first time tensions have simmered over , including in Tripoli . Last month , violence flared after Lebanese authorities arrested Chadi Mawlawi , an Islamist activist who was helping Syrian refugees by providing food and shelter , his cousin said . Lebanon had accused Mawlawi of being an operative in an al Qaeda-inspired group -- something his relatives deny . The activist was eventually released , but not before his arrest sparked fighting that killed seven people and left dozens wounded . Elsewhere in Lebanon , the kidnapping of a group of Shiite Muslim pilgrims in Syria prompted angry protests last month in Beirut , the capital . Also last month , gun battles in Beirut between rival Sunni political parties -- one supporting Syria 's al-Assad and one opposing him -- left two dead and 18 wounded . That was the worst outbreak of violence in a city where the powerful Hezbollah militia engaged government troops in street battles in 2008 . That bloodshed came hours after Lebanese troops killed two Sunni Muslim clerics -- both opposed to the embattled Syrian regime -- at a checkpoint in northern Lebanon . Syria has long been a major influence in Lebanon , and not just because of the extensive border the two nations share . Lebanon was considered part of `` greater Syria '' until the end of World War I. Syrian troops were deployed in Lebanon between 1976 and 2005 , primarily in the north -- ostensibly at first as peacekeepers to help stop Lebanon 's long civil war , though they stayed long after the fighting stopped in 1990 . The Syrian forces ' 2005 withdrawal followed the car-bomb killing of former Prime Minister Rafik Hariri in Beirut , which some blamed on elements of al-Assad 's regime . Since then , Lebanon 's most prominent political blocs have been sharply divided -- the ruling pro-Syria alliance led by Prime Minister Mikati on one side and anti-Syrian factions led by Saad Hariri , the son of the assassinated former prime minister , on the other . The unrest in Syria that began 15 months ago with peaceful anti-government protests , followed by a government crackdown , has meant further complications for Lebanon . Thousands of refugees have poured across the border . And in April the Lebanese army announced it had intercepted a cargo ship bound for Tripoli that was filled with weapons it believes were meant to be delivered to rebel forces in Syria . CNN 's Saad Abedine , Hamdi Alkhshali and Nick Thompson contributed to this report .
Lebanese media : Clashes continue early Sunday in Tripoli , leading to one death . 12 people were killed Saturday during fighting in Tripoli , state news reports . - The United Nations says it is investigating the deaths of at least 20 civilians and dozens more wounded after a car bomb exploded outside an office building in Tripoli. Tripoli residents say the situation had calmed by late Sunday .