Europe

• Summer – Alberic II leads an uprising at Rome against his stepfather Hugh of Provence, king of Italy, after he is insulted at the wedding of his mother, Marozia. Alberic seizes the Lateran Palace, and Hugh escapes with an escort out of the city. Marozia is captured and put in prison. Alberic takes control of the city and appoints himself as the ruler (princeps) of Rome.
• Doge Orso II Participazio retires voluntarily to a monastery, marking the end of the Participazio dominance of the Venetian dogeship. He is succeeded by Pietro II Candiano, the son and namesake of the earlier doge Pietro I.
• Pietro II and Capodistria make a trade agreement without imperial authorization, the self-proclaimed "Marquis" Wintkar forbids repaying any debts to Venice. Pietro begins an economic blockade of Istrian cities.^[1]

Asia

• Emir Mardavij ibn Ziyar invades Tabaristan and captures the city of Gorgan. The Daylamite military leader Makan ibn Kaki tries to reclaim his territories, but fails. He seeks refuge among the Samanids and enters the service of their ruler Nasr II. He appoints him as governor of Kirman (modern Iran).

• October 31 – Abbasid caliph al-Muqtadir is killed while fighting against the forces of general Mu'nis al-Muzaffar. Al-Muqtadir's brother al-Qahir is chosen to succeed him.

Religion

• Summer – Pope John XI is forced to grant power over Rome to his half-brother Alberic II, who is invested as "Prince and Senator of all Romans". John is to resign himself to spiritual leadership of the Catholic Church.