Greta Thunberg‘s buddy and accused groper has been arrested after their peace flotilla landed in Israel, officials said.

Thiago Ávila and Saif Abu Keshek were taken into custody under suspicion of “illegal activity,” the Israel Foreign Ministry said Saturday.

“Saif Abu Keshek, a leading member of the PCPA – an organization designated and sanctioned by the United States as a Hamas front – and Thiago Ávila, who operates with the PCPA and is suspected of illegal activity, have arrived in Israel,” the agency said.

“They will be transferred for questioning by law enforcement authorities.​​​​​​​​​​​​​​​​ Both will receive a consular visit from the representatives of their respective countries in Israel.”

The other roughly 175 members of their flotilla were rerouted to Greece.

The married Ávila was recently accused of “sexual misconduct” with three volunteers on the flotilla.

He denied the accusations last month.

“These allegations are obviously not true,” he told The Post via WhatsApp