In a widely watched terrorism lawsuit that drew the attention of the Obama administration, a federal judge in Manhattan ruled on Monday that the Palestinian Authority would have to post $10 million and an additional $1 million monthly to appeal a huge damages award for its role in six terrorist attacks in Israel that had killed and injured Americans.

The bond amount was much lower than lawyers for the victims had sought and matched the amount that lawyers for the Palestinian Authority said in court on Monday that the defendants could pay.

Just two weeks ago, the Obama administration weighed in on the case, expressing concern in a submission to the judge that requiring too high a bond could cause economic and political harm to the Palestinian Authority and the broader peace process.

The Palestinian Authority and the Palestine Liberation Organization in February were found liable in the attacks, which occurred between 2002 and 2004, after a lengthy civil trial brought under an antiterrorism law that provided for a tripling of the jury’s damages award of $218.5 million, for a total of $655.5 million.