NEW YORK (CNN/Money) - The celebrity weekly magazine US Weekly will no longer buy photos from paparazzi who engage in "risky" behavior, according to a published report.

The New York Times reported Tuesday that the magazine, a unit of privately-held Wenner Media, announced the policy, which it said formalizes existing guidelines to ban pictures taken by photographers who "violated traffic laws, trespassed on private property or invaded the privacy of children at school."

The announcement comes as the Los Angeles District Attorney's office has opened a criminal investigation into the activities of "paparazzi" who break the law in pursuit of photographs, according to the Times report.

The newspaper said the probe is looking not only at the actions of individual photographers but also whether the competing paparazzi teams have violated conspiracy laws that could result in felony charges. Two weeks ago, police said a van driven by a photographer intentionally plowed into the side of a car driven by actress Lindsay Lohan, according to the report.

The magazine has "always gone out of our way to omit photographs from the magazine if we were able to determine the photos came through means that were dangerous," US Weekly Editor Janice Min told the Times. "After serious consideration over the last few days, we realized this has become a serious safety issue and US should address it."

US Weekly has a circulation of about 1.5 million, according to the Times, citing the Audit Bureau of Circulations, and its content depends heavily on celebrity news and photographs.

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