On 31 August a force from the frigates , and , and the sloop captured the fort and town of Sumenep, on Madura Island in the face of a large Dutch defending force. The rest of Madura and several surrounding islands placed themselves under the British soon afterwards. Suspecting Janssen to be in Cirebon, a force was landed there from , , HMS "President", and on 4 September, causing the defenders to promptly surrender. General Jamelle, a member of Janssens's staff, was captured in the fall of the town. The town and fort of Taggal surrendered on 12 September after and arrived offshore.