MADISON, Wis. (AP) -- A coalition leading the effort to recall Wisconsin Gov. Scott Walker says its website was the target of a cyber-attack.

United Wisconsin says its servers were flooded at about 2 p.m. Monday.

The group says the source of the alleged attack on its website, www.unitedwisconsin.com, is unknown. But the group says it is reporting the incident to the FBI and the Wisconsin attorney general's office.

Walker, a Republican, is being targeted for recall because of his moves to significantly curb union rights in Wisconsin.

A spokeswoman says in a statement the Republican Party of Wisconsin "does not condone or support" any misconduct by outside groups or "rogue individuals" to interfere with the recall process.