The Ukrainian capital Kyiv came under heavy fire from Russian cruise missiles during the night.
The order gave internet service providers until August 24 to comply.
Investigators have questioned two men, one of whom confirmed the storage of the ammonium nitrate, the authorities said.
He said 35 other countries are ready to join the boycott for “fair sport” but did not name them.
A “massive missile attack” hit Kryvyi Rih, Ukrainian President Volodymyr Zelensky’s hometown.
The editing feature is the most recent of the many additions that WhatsApp has released in recent weeks.
Mr Altman also spoke to students at the MUSON centre about the future powered by artificial intelligence (AI).
Officials said drones were used to attack a fuel depot and an administrative building in Bryansk, a region of western Russia close to the border with Ukraine.
The latest move came after he was only released from solitary confinement on Friday.
The protests broke out in the Oromiya region when three church officials declared themselves archbishops in January and set up their own governing body.
