Audio By Carbonatix
A school in the Congolese capital of Brazzaville has been closed by the authorities after students lowered the national flag and hoisted a different one.
Local media described it as an unidentified black flag.
The government condemned the act by students at Technical High School as a violation of the symbol of the republic and a "serious act of unpatriotism".

The government will take the necessary measures "in response to the crime", Education Minister Ghislain Thierry Magessa Ebomé was quoted as saying.
On Monday it was announced the school will be shut until further notice, and its registration for state exams has been suspended.
Thirteen students have been arrested over the incident and handed over to investigating authorities.
Latest Stories
-
Dr Abena Nyarkoa to join panel discussion at Africa Together Conference in Cambridge
43 minutes -
Walmart warns US shoppers are cutting spending as higher petrol prices bite
1 hour -
Flexible exchange rate regime critical in absorbing external shocks – First Deputy Governor
1 hour -
Toilets and changing rooms must be used on basis of biological sex, guidance confirms
1 hour -
Emily in Paris to end after sixth season, says Netflix
1 hour -
Angry crowd sets Ebola hospital tents on fire in DR Congo
1 hour -
Russia and China condemn US over indictment of former Cuban leader
2 hours -
Bank of Ghana reverts to previous Cash Reserve Ratio policy after scrapping it last year
2 hours -
Ghana-eligible defender Beres Owusu signs permanent deal with Grazer AK
2 hours -
A Super El Niño is coming: What does it mean for Ghana?
2 hours -
Driving Schools Association pushes for mandatory driver training to reduce road crashes
2 hours -
Climate change exists with or without humans — Youth advocate
3 hours -
Plastic waste driving flooding and climate concerns in Bamaahu — Youth Climate Reporter
3 hours -
This week on The Career Trail
3 hours -
My book was born out of university research – Mary Anane Awuku
3 hours