PHILADELPHIA (CBS) — Authorities say an elderly couple were the victims of a home invasion Friday morning in Northeast Philadelphia.

The incident happened at about 6:30 a.m. inside a home in the 2000 block of Murray Street in the city’s Bustleton section.

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Police say two men wearing black masks forced their way into the home through a rear kitchen window.

Investigators say a 75-year-old woman and her 77-year-old husband were in the home. Police say the female was sprayed in the face with mace.

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It was not immediately known what, if anything, was taken from the home.

The suspects remain on the loose.

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The incident remains under investigation.