| The national Baitul Mukarram mosque was one of the first to give the special sermon |
All 300,000 mosques in Bangladesh
have been asked give a sermon against terrorism and extremism in their
Friday prayers this week.
It also urges parents to protect their children from "brainwashing".
| There was tight security at the national mosque in the capital |
The move comes after two deadly Islamist attacks in Bangladesh in recent weeks, including a siege on a Dhaka cafe that left 20 people dead.
That attack, and an attack on police guarding the country's largest Eid gathering in Kishoreganj, were both claimed by the Islamic State militant group.