When the Nicaean force reached the village of
Selymbria, some west of Constantinople, they learned from some independent local farmers (
thelematarioi) that the entire Latin garrison, as well as the Latin-allied
Venetian fleet, was absent conducting a raid against the Nicaean island of
Daphnousia in the Black Sea. Strategopoulos initially hesitated to take advantage of the situation, fearing that his small force might be destroyed if the Latin army returned too soon, and because he would exceed the provisions of the emperor's orders, but eventually decided he could not squander such a remarkable opportunity to seize the city without a prolonged siege. On the night of 24/25 July 1261, Strategopoulos and his men approached the
city walls and hid at a
monastery near the Gate of the Spring. Strategopoulos sent a detachment of his men, led by some of the
thelematarioi, to make their way to the city through a secret passage. This afforded them the opportunity to attack the walls from the inside, which surprised the guards and opened the gate, giving the Nicaean forces an entry into the city. The Latins were taken completely unaware, and after a short struggle, the Nicaeans gained control of the Theodosian land walls. As news of this spread across the city, the Latin inhabitants, from Emperor
Baldwin II downwards, hurriedly rushed to the harbours of the
Golden Horn, hoping to escape by ship. At the same time, Strategopoulos' men set fire to the Venetian buildings and warehouses along the coast to prevent them from landing there. Due to the timely arrival of the returning Venetian fleet, many of the Latins managed to evacuate to the still Latin-held parts of Greece, marking the end of the
Latin occupation with the city's restoration to the Byzantines. ==Aftermath==