Chargers allegedly caught using sticky substance

The San Diego Chargers are being investigated for what is potentially one of the most unsuccessful attempts at breaking the rules in NFL history.

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FOX Sports insider and NFL Network contributor Jay Glazer reported Sunday that the Chargers were caught using an illegal "stickum-type" substance against the Denver Broncos on Monday night.

Glazer reported that the NFL already had started an investigation before Monday night's game. A Chargers equipment man was seen hiding a possible illegal sticky substance and giving to players. A line judge saw it and had it confiscated and sent to the Broncos and the league.

NFL spokesman Greg Aiello told NFL.com and NFL Network that the league still is gathering facts. The Chargers issued the following statement: "We are aware of the inquiry and are cooperating fully with the league."

The Chargers blew a 24-point lead Monday night against the Broncos and lost 35-24.

Follow Gregg Rosenthal on Twitter @greggrosenthal.