The FBI is investigating fake text messages sent to Republican members of the House of Representatives from someone claiming to be an aide to Vice President Mike Pence, according to The Wall Street Journal.

The imposter posed as Alyssa Farah, Pence's press secretary and a former House staffer, and sent text messages to several House members, including one who engaged in an exchange with the texter.

The FBI did not immediately respond to a request for comment from The Hill.

A person familiar with the matter told The Journal the texts sought the whereabouts of some lawmakers and their availability for meetings.

Rep. Liz Cheney (R-Wyo.), the House Republican conference chairwoman, is aware of the text messages and alerted the House Sergeant at Arms office, a spokesman confirmed to The Journal.

Rep. Adam Kinzinger (R-Ill.) was one of the members who received the messages, and forwarded them to law enforcement officials.

"For months, we have referred these hoaxes to law enforcement, but only recently has there been a renewed interest to address the issue," said Maura Gillespie, a spokeswoman for Kinzinger told The Journal. "Congressman Kinzinger is eager to cooperate with law enforcement as they see fit."

A White House official told The Journal that the administration considers the texts to be a potential security threat and that the fake numbers have been blocked from White House phones.