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UPDATE (Tuesday at 12:30 p.m.) -- DeSean Jackson has left Redskins Park without a contract after about three hours of meetings, according to CSNWashington.com. But reports indicate that his agent Joel Segal is still negotiating with Washington, and that the receiver is not yet leaving town.

[NEWS: Jackson leaves Redskins Park]

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The San Francisco 49ers and Oakland Raiders both reached out to the Los Angeles Police Department to confirm reports of DeSean Jackson's continued involvement with alleged members of Los Angeles street gangs; LAPD confirmed the reports, CSNBayArea.com has learned.

Last week, NJ.com reported that the Philadelphia Eagles were averse to retaining DeSean Jackson due to his off-the-field affiliations and the mercurial six-year veteran was released shortly after the article was published.

[RELATED: Raiders will make push for Jackson]

Jackson, 27, reportedly arrived in the Washington area on Monday and was scheduled to meet with Redskins team officials on Tuesday.

The two sides are close to an agreement, according to NJ.com, and the Redskins were not among the teams to reach out to the LAPD.

[RELATED: DeSean Jackson walks with gangsters]

The Browns, Bills and Jets have also reportedly shown interest in Jackson.

Jackson, a former Cal standout, is coming off his best NFL season, catching 82 passes for 1,332 yards and nine touchdowns.