A bipartisan group from the U.S. House of Representatives is calling for the federal government to investigate the use of the Boston “BDS Map” by violent extremists and terrorists, and boost security for the organizations listed.

Sent to Attorney General Merrick Garland, Homeland Security Secretary Alejandro Mayorkas and FBI director Christopher Wray, the letter warns that the “Mapping Project” released earlier this month by a BDS group in eastern Massachusetts—listing Jewish organizations with names and addresses—could be used as a roadmap for violent attacks by BDS supporters, including anti-Semitic Foreign Terrorist Organizations, homegrown extremists and domestic extremists.

The effort was led by Reps. Josh Gottheimer (D-N.J.) and Don Bacon (R-Neb.), and joined by 35 colleagues.