Activist Greta Thunberg was deported from Israel after a brief detention following her attempt to break Israel’s naval blockade of the Gaza Strip.

Twelve activists were detained after Israeli naval forces boarded the Madleen early Sunday morning. Thunberg is among three of those who will be deported, and nine others have refused deportation, according to the Gaza Freedom Flotilla. The group said some were encouraged to accept deportation to speak about their experiences, while the others will have their cases heard at an Israeli court. Their first hearing is expected on Tuesday.