Cases of homegrown extremism rose modestly over the past three months, posing an ongoing threat to United States security, according to a new House Homeland Security Committee report published Wednesday.

The United States has detected 14 homegrown jihadi incidents in the country since January, the majority of which were inspired by the Islamic State terrorist group, the committee found in its latest Terror Threat Snapshot report, citing data compiled by the Majority Staff of the Homeland Security Committee.

Five of those cases occurred between May and July, bringing to 214 the total number of arrests related to homegrown terrorism since the Sept. 11, 2001 attacks.

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