A Vermont lawmaker was compelled to apologize publicly after being caught on video pouring water into her colleague’s work bag multiple times across several months.

The bizarre behavior is allegedly a part of a campaign of harassment that one legislator aimed at another who represents the same district in the Green Mountain state, independent outlet Seven Days first reported.

The Republican representative, Mary Morrissey, 67, confessed to dumping water in the bag of the Democratic legislator Jim Carroll, 62. She later apologized during a Vermont state house session on Monday, Boston.com reported.

“I am truly ashamed of my actions,” Morrissey said.

Morrissey did not respond to the Guardian’s request for comment.