British police charged a 36-year-old man on Monday with the murder of Sabina Nessa, a primary school teacher killed as she walked to meet a friend in London.

The Metropolitan Police force said Koci Selamaj, from Eastbourne on England’s south coast, faced one count of murder. He was arrested Sunday in what police called a “significant” development in their investigation. He is due to appear in court on Tuesday.

Nessa, 28, was found dead in a park in Kidbrooke, southeast London, on Sept. 17. Her killing — as she walked through a park just a few minutes from her home