FBI agents could be seen outside the Texas home of Rep. Henry Cuellar, D-Texas, Wednesday conducting unknown law enforcement activity.

"The FBI was present in the vicinity of Windridge Drive and Estate Drive in Laredo conducting court-authorized law enforcement activity," the FBI said in a statement to Fox News. "The FBI cannot provide further comment on an ongoing investigation."

Rep. Henry Cuellar, D-Texas

WASHINGTON, DC - JULY 30: U.S. Rep. Henry Cuellar (D-TX) speaks on southern border security and illegal immigration, during a news conference at the U.S. Capitol on July 30, 2021 in Washington, DC. Cuellar urged the Biden administration to name former Homeland Security Secretary Jeh Johnson as a border czar. (Photo by Kevin Dietsch/Getty Images)

DEM REP. CUELLAR SAYS BIDEN LISTENING TO POLITICAL ACTIVISTS, NOT TEXAS BORDER COMMUNITIES AND LAW ENFORCEMENT

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UNITED STATES - JUNE 27: Rep. Henry Cuellar, D-Texas, talks with reporters in the Capitol after a meeting of House Democrats on Thursday, June 27, 2019. (Photo By Tom Williams/CQ Roll Call)

Valerie Gonzalez, a reporter on the scene for The Monitor, said that FBI agents were snapping photographs of trucks in the driveway and said it was unclear if anyone was inside the home.

Gonzalez also reported that FBI vehicles were spotted at Cuellar's campaign headquarters and that items were seized by the FBI at Cuellar's home.

"Congressman Cuellar will fully cooperate in any investigation," a spokesperson for Cuellar's office said in a statement to Fox News. "He is committed to ensuring that justice and the law are upheld."

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Rep. Henry Cuellar, D-Texas

WASHINGTON, DC - SEPTEMBER 12: Rep. Henry Cuellar (D-TX) delivers remarks during a rally for the passage of the USMCA trade agreement, on September 12, 2019 in Washington, DC. Several agricultural groups including the American Farm Bureau Federation, the American Soybean Association and the National Corn Growers Association held the rally to urge Congress to ratify the trade deal. (Photo by Tom Brenner/Getty Images) (Getty Images)

Cuellar, who represents Texas’ 28th district that stretches from San Antonio, to Laredo, to Rio Grande City, has been one of the most outspoken liberal critics of the Biden administration's border policy and has called for Vice President Kamala Harris to be replaced as President Biden's "border czar."