The 1990 Temple Mount riots, also known as Black Monday or the Al Aqsa Massacre, was an event that took place in Al-Aqsa Mosque, Jerusalem at 10:30 am on Monday, 8 October 1990 before Zuhr prayer during the third year of the First Intifada. They began after a decision by the Temple Mount Faithful to lay a cornerstone at the site. The riots resulted in the death of 17-23 and the injury of more than 150 Palestinians.