A murder investigation is underway in Russia after a car bomb killed the daughter of a prominent ally of President Vladimir Putin outside Moscow.
Darya Dugina died on Saturday night after the vehicle she was driving exploded.
Russia's Investigative Commission says it believes the explosion was planned in advance.
A foreign ministry official suggested that Ukraine might be responsible, but Ukraine firmly denies this.
Dugina is the daughter of Alexander Dugin, who has been called the spiritual guide of the Russian invasion of Ukraine.
According to the Russian news agency TASS, the investigation has revealed that 400 grams of TNT explosives were used to detonate the car on Saturday.
CNN's Fred Pleitgen has all the information from Moscow.