No not yet.
It could be like the Moscow apartment bombings at the beginning of Putin's career. it's how he became president. the bombings started the 2nd Chechen war and Putin's approval ratings skyrocketed after he said he'd put the terrorists in the "liquidator" and then everyone voted for him.
Alexander Litvinenko was certain Putin was behind that as the people who put the substances in the basements of one apartment were caught one time and they produced FSB identity cards and said they were taking part in a "exercise".
So it could be a similar thing here.
However why just after the election? We do not know