The wife of Pennsylvania's lieutenant governor allegedly made an obscene gesture then threw a cup of soda over one of her husband's political rivals. Tonya Stack, whose husband Mike Stack holds the state's second-highest office, reportedly dumped cola on state representative Kevin Boyle in an unseemly row at a fundraiser in honor of a slain Afghanistan veteran. According to Boyle, Stack 'flipped me the bird' as soon as she spotted him at the event in Philadelphia. 'Soda fight': Pennsylvania state representative Kevin Boyle, left, claims that he was covered in soda by Tonya Stack, right, wife of Lieutenant Governor Mike Stack, and a political opponent . When he described the gesture aloud as 'a trashy move', he claims she retaliated by hurling the dark, sticky liquid at him, according to a report by Philly.com. He told the site: 'She aimed the soda at me and it landed directly on me, hitting from my chest to my lap'. He added that at the time he was sitting with the grandmother of Michael Strange, a Navy codebreaker who was killed by RPG fire in 2011 and whom the event was honoring. Boyle said that she came close to getting soaked as well, but that he took the brunt of the blast. He claims that after her shot landed, she was bundled out by a State Trooper who was guarding her. Rivalries: Boyle and Lt Gov Mike Stack (pictured) have been at the center of a political row . Boyle and Mike Stack, both Democrats, are at the center of a political struggle over who will take over the seat in Pennsylvania's state senate which Stack vacated to become Lieutenant Governor in January. Earlier this year, politicsPA.com also reported that the two were also backing different candidates in the race for a Philadelphia district which Boyle's brother had resigned to become a U.S. congressman. Ultimately, Stack's 'handpicked' candidate was chosen to contest the election, but lost to a Republican, Philly.com reported. Commenting on the alleged confrontation, Boyle told the website: 'This was a ridiculous and immature act that shouldn't have happened and hopefully won't be repeated. 'We have to be civil about our differences in politics.' A spokesman for Mike Stack confirmed that the lieutenant governor's wife was at the event. However, he did not comment on the soda-throwing part of the allegations, and insisted that she left 'under normal circumstances'.
Tonya Stack, wife of Mike Stack, allegedly hurled drink at fundraiser .
Kevin Boyle, who sits in PA House of Representatives, says he was hit with obscene gesture, called it 'trashy', then got covered in sticky drink .
Event was held in honor of Michael Strange, who died in Afghanistan .
Boyle and Stack, both Democrats, have been in political power struggles .
Backed separate candidates for seats in house legislature .