During the battle in which city was Husayn ibn Ali, the grandson of the Islamic prophet Muhammad, killed?

The Battle of Karbala was fought on 10 October 680 (10 Muharram in the year 61 AH of the Islamic calendar) between the army of the second Umayyad caliph Yazid I and a small army led by Husayn ibn Ali, the grandson of the Islamic prophet Muhammad, at Karbala, Iraq.

Prior to his death, the Umayyad caliph Muawiyah I had nominated his son Yazid as his successor. Yazid's nomination was contested by the sons of a few prominent companions of Muhammad, including Husayn, son of the fourth caliph Ali, and Abd Allah ibn Zubayr, son of Zubayr ibn al-Awam. Upon Muawiyah's death in 680 CE, Yazid demanded allegiance from Husayn and other dissidents. Husayn did not give allegiance and traveled to Mecca.

On Husayn's way to Kufa with a retinue of about 70 men, his caravan was intercepted by a 1,000-strong army of the caliph at some distance from Kufa. He was forced to head north and encamp in the plain of Karbala on 2 October, where a larger Umayyad army of 4,000 arrived soon afterwards. Negotiations failed after the Umayyad governor Ubayd Allah ibn Ziyad refused Husayn safe passage without submitting to his authority, a condition declined by Husayn. The Battle of Karbala ensued on 10 October during which Husayn was killed along with most of his relatives and companions, while his surviving family members were taken prisoner.