"[A total of] 650 Rockets being fired into Israel from Gaza in an attempt to overwhelm Israels [sic] Iron Dome: 173 intercepts, 4 people killed, and 28 wounded. What is @IlhanMN response to this violence? Will she condemn it?" Pierson tweeted on Sunday, attaching a video depicting multiple rockets fired into the sky.
Twitter users' assumption that the footage was made in Donbass and dates back to 2015 could not be immediately verified.
Katrina Pierson has neither commented on the controversial Twitter post, nor deleted it as of 11:30 GMT.
Twitter users have slammed Pierson for "peddling disinformation" to attack the congresswoman, with some joking about Gaza "annexing" Ukraine.
Tensions between Israel and Gaza further escalated on 4 May, when hundreds of rockets were fired toward Israel from the enclave, prompting the IDF to retaliate. The violence has resulted in the deaths of at least 25 Palestinians, and four Israelis.