sentences:  The city briefly fell to Tsar Samuel of Bulgaria at the end of the 10th century, but the Byzantine emperor Basil II quickly regained it in 1001 since its Bulgarian governor, Dobromir, surrendered the city without a fight.The city is not mentioned again until the late 12th century, when it was briefly held by the Normans (1185) during their invasion of the Byzantine Empire.After the Fourth Crusade (1204), it briefly became part of Boniface of Montferrat's Kingdom of Thessalonica, and a Latin bishop took up residence in the city.