The tanker, known as the Skipper (formerly the Adisa), was seized because it had been previously sanctioned by the U.S. in 2022 for its involvement in an illicit oil shipping network.
The sanctions were specifically imposed because the network was accused of:
Smuggling Iranian oil: The network used a "shadow fleet" of tankers to smuggle crude oil on behalf of Iran.

G say above.

last week Iran also seize a tanker  what 

and Houti  also  did same....

those got balls can do 

in int waters  etc...