One of the 10 people pardoned by Gov. Chris Christie last week donated to the governor's campaign and was a parent at the same all-male private school attended by Christie's son.

Joseph Michael Longo, 55, pleaded guilty in June 2016 to four counts of tampering with public records.

Christie pardoned Longo on Dec. 22, weeks before his term expires on Jan. 16. Since taking office, Christie has granted clemency to 29 individuals. The governor's office did not immediately respond to a request for comment or provide a copy of Longo's clemency application.

Filings with the New Jersey Election Law Enforcement Commission show Longo donated $500 to Christie's gubernatorial campaign in 2009. Longo is also listed as president of Longo Electrical-Mechanical, Inc., business records show. That entity donated another $1,050 to Christie's campaign and inaugural committees in 2009, 2010 and 2014, according to campaign finance records.

Of the 10 pardoned individuals, Longo is the only one who donated to Christie's campaign, a check of campaign filings show.

In 2016, Longo pleaded guilty in Superior Court in Middlesex County to tampering with public records. He was sentenced to two years probation and fined $300,000, court records show.

His attorney for the case, Jeffrey Chiesa, is a longtime Christie friend and ally who has served as New Jersey's attorney general and as a U.S. senator. He is overseeing the state takeover of Atlantic City.

Longo Electrical has received government contracts with the Passaic Valley Sewerage Commission and the New Jersey Water Supply Authority, among others, contracts and meeting minutes posted online show.

Politico initially reported on Christie's relationship with Longo. The report found Longo posted pictures of himself and Christie on his Facebook page.

Longo's Facebook page has since been made private. But a Twitter photo posted by Longo in March 2013 show Christie's arm around Longo with the caption, "just hanging."

Among Longo's Twitter followers: Gov. Chris Christie.

Just hanging pic.twitter.com/K0zvfK6sK6 — Joseph M Longo (@Jmlongo324) March 1, 2013

Longo did not return a message seeking comment.

Longo's son attended Delbarton School, an exclusive all-boys Catholic academy, at the same time Christie's son attended in 2012.

Christie also Tweeted in April 2013 that he was at the Villa Walsh father/daughter dance with Longo. To which Longo replied, "was a lot of fun last night with our beautiful girls."

Karen Yi may be reached at kyi@njadvancemedia.com. Follow her on Twitter at @karen_yi or on Facebook.