Hackers behind Pipeline attack received $90m in Bitcoin before shutting down

"funds were drained"

"speculation that this bitcoin had been seized"

Seems like a case of yet another reporter not understanding how Bitcoin works. You can not drain funds, you can only transfer them to a new wallet. So where did they go? Why not just link the wallet's public key?

Also Bitcoins can not be seized. Reminds me of that funny story where German media reported Bitcoins worth over 50 million Euros had been "seized" from a criminal, but he wouldn't tell them the password. What the police had actually seized was an encrypted hard disk or hardware wallet. Some time later it was reported with surprise that someone had "drained" funds from the wallet despite it being in the hands of the authorities.