 Nevertheless they destroyed many cities in Moesia in 587 including Marcianopolis and Kabile though they failed in the sieges of Diocletianopolis, Philippopolis, and Beroe.In 588, they abandoned the siege of Singidunum after only seven days, in exchange for a meagre ransom.After this they succeeded at the siege of Anchialos, with the support of a fleet manned by Slavic auxiliaries, they then started and quickly abandoned the sieges of Drizipera and Tzurullon.