In 2009, a group of four American Muslims planned to blow up the temple.[3] After a six-week trial, the four were convicted on conspiracy to use weapons of mass destruction and conspiracy to acquire and use anti-aircraft missiles. In 2011, the men were sentenced in the District Court to 25 years in prison each. On appeal to the Federal Court, their sentences were upheld. In July 2023, a judge ordered compassionate release for three of the four men, with time served, being eleven years. The judge declared their 25-year sentences ‘unduly harsh and unjust’.[4][5]
On May 30, 2009, New York Governor David Paterson announced he would give the Riverdale Jewish Center and the Riverdale Temple $25,000 each to improve their security. The money came from the Department of Homeland Security (DHS) and primarily involved the installation of alarms and surveillance equipment.[6]
^Reilly, Patrick (July 28, 2023). "3 of 'Newburgh Four' convicted in 2009 New York synagogue bombing plot to be released, judge rules while blaming FBI". New York Post. New York, N.Y.