By CBS3 Staff

PHILADELPHIA (CBS) — The Pennsylvania State Troopers Association is offering a warning following the deaths of two state troopers and a pedestrian who were killed by an allegedly impaired driver.

They say scammers are calling people and pretending to raise money for the families of the troopers killed.

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In a statement, the PSTA says, “The public should not make donations or provide personal information to these callers. The PSTA is the only official organization that represents and serves Pennsylvania State Troopers.”

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The deadly crash happened on I-95 South near the Broad Street exit and the sports complex in Philadelphia around 1 a.m. Monday.

Police say the troopers, 33-year-old Martin Mack and 29-year-old Branden Sisca, were trying to get a pedestrian who was walking on I-95 in South Philly to safety when an SUV struck and killed all three of them.

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Twenty-one-year-old Jayana Webb was allegedly impaired at the time of the crash and is facing a long list of charges, including third-degree murder.