ST. PAUL (AP) — Recently resigned Senate Majority Leader Amy Koch is admitting she had a relationship with a Senate staffer but says she did not violate any laws or Senate rules.

Koch made her first public statement Wednesday since resigning the majority leader post last Thursday. She sent a written statement to reporters from a personal email account. A Senate Republican spokeswoman confirmed it came from Koch.

Koch says she made "mistakes and errors in judgment for which I am deeply sorry." She expressed regret and apologies to constituents, the Republican Party, fellow legislators, friends and her family.

Koch did not return a phone message seeking further comment. She said last week she would not seek reelection next year.

Copyright 2011 The Associated Press.