President Trump threatened federal intervention in Chicago on Tuesday night if the city does not do more to address violent crime, resurfacing a criticism he made during the presidential campaign.

“If Chicago doesn’t fix the horrible ‘carnage’ going on, 228 shootings in 2017 with 42 killings (up 24% from 2016), I will send in the Feds!” he said on Twitter just before 9:30 p.m.

The tweet came after the evening broadcast on Fox News of “The O’Reilly Factor,” which featured a segment in which the host, Bill O’Reilly, explored whether and how the federal government could intervene in combating violent crime by having federal authorities prosecute some cases or calling in the National Guard.