Two weeks ago, the Republican Party of Wisconsin opened a field office on Milwaukee's north side.

On Wednesday, the state party said it discovered the office in the 2200 block of North King Drive was vandalized, with paint on the windows and the word "Scum" painted on the back door.

The paint was still visible on a visit to the office during the afternoon. Volunteers were also staffing the facility.

Milwaukee police released a statement saying the agency responded to a vandalism complaint in the 2200 block of North King Drive about 8:45 a.m.

"The circumstances are still under investigation," police said in a statement. "Milwaukee Police continues to seek (an) unknown suspect."

Anyone with information should contact police at (414) 935-7360 or Crime Stoppers at (414) 224-TIPS.

The party tweeted that the incident "won't change our commitment to reaching voters in the community. What kind of intolerance can we expect to see when Democrats bring their convention to Milwaukee this summer?"

In an interview, Andrew Hitt, chairman of the Republican Party of Wisconsin, indicated that the incident might be politically motivated.

"I think we've seen all over this country the intolerance that the left has for conservative thought, conservative ideas," he said. "I think this is just another example of it. We're not going anywhere. We want to be part of this community. We came here to talk about the president's accomplishments, the accomplishments of Republican legislators in Wisconsin. We're going to continue to do that."

Philip Shulman, spokesperson for the Democratic Party of Wisconsin, said in a statement: "Unlike the Republican Party, we unequivocally condemn actions like this regardless of who is targeted."

State Sen. Chris Larson, D-Milwaukee, who is running for Milwaukee County executive, spoke out against the incident.

"In a democracy, we can peaceably disagree but vandalism is unacceptable," he said. "At a time where our country is most divided, we need to focus our efforts on bipartisan support for issues within our community. Party politics plays no role in ending family homelessness, providing property tax relief and ensuring optimal funding for our parks, transit and emergency medical services."

State Rep. David Crowley, D-Milwaukee, who is also running for county executive, condemned the incident.

"There is nothing wrong with disagreeing with people politically but if you use vandalism or violence you're doing a disservice to your cause," he said. "It's unfortunate this incident happened. We have to do better as a community to agree to disagree."

State Sen. Lena Taylor, D-Milwaukee, who is running for Milwaukee mayor, said she was "surprised to see the word 'scum’ used in defacing" the office, adding "it typically isn’t a word used by people in the African-American community. It will be interesting to see what the investigation yields about who tagged the property."

"Obviously, destroying property is wrong," Taylor said in a statement. "On a night when people were exercising the loudest megaphone they have to register their opinions about a candidate or a party, these individuals chose to use a spray can instead of their vote.

"But I want to be clear, although they have the right, it is frustrating to see a GOP office spring up in a predominantly black neighborhood given the abysmal record the Trump administration and the Wisconsin GOP have in our community. Simply, look at their record."

On Saturday, Republicans have scheduled at the office an event called "Black Voices for Trump."