The coastal city of Beirut was captured from the Fatimids by the forces of Baldwin I of Jerusalem on 13 May 1110, with the assistance of Bertrand of Toulouse and a Genoese fleet.

In addition, the Fatimids had to disperse their forces including 2,000 soldiers and 20 ships in each of the remaining ports, until the main support could arrive from Egypt.

[4] Jacques de Vitry, a historian of the Crusades, reported:[5] Our people lay siege to Beyrout both by sea and land, and being joined by Bertram, the noble count of Tripoli, after a two months' siege, having brought wooden towers up to the walls and joined them to the walls by ladders, forced their way into the city, and slew many of the citizens, cast the rest into chains and held them captive .

Beyrout is a city on the seashore between Sidon and Biblium in the country of Phoenicia ... it is fertile and fair, with fruit trees, woods and vineyards.Moreover, William of Tyre wrote that Baldwin and Bertrand ordered galleys from the nearby controlled ports to blockade Beirut, while constructing all siege towers, ladders, bridges and catapults from the pine trees in the neighborhood.

[8] After the fall of Beirut, Baldwin celebrated Pentecost in Jerusalem,[9] then he hurried along with Bertrand to the County of Edessa to fight against Mawdud's invasion.