Armed militants launched an attack on a market in Burkina Faso's Sanmetenga province, leaving 36 civilians dead.
Officials said the terrorists targetted those entering the Alamou market before burning the structure down.
"These repeated attacks on innocent civilians call for real cooperation between the defence and security forces," the government said.
It was not immediately clear who was responsible for the attack.
President Roch Marc Kabore has announced a two-day mourning period.


Trump adds 7 countries to full travel ban list
Family of alleged Bondi gunman unaware of 'radical mindset', say Indian police
Trump orders 'blockade' of sanctioned oil tankers leaving, entering Venezuela
Israeli forces kill Palestinian teen in West Bank, health ministry says
Trump sues BBC for defamation, seeks up to $10 billion in damages
FBI foils 'terror plot' targeting Los Angeles
Hong Kong court finds tycoon Jimmy Lai guilty in landmark security trial
Ukraine peace talks stretch into second day at start of pivotal week for Europe
