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Brothers Justin and Kevin Cassidy, both 19, of Aston, are in police custody, the news outlet reports.
A third suspect, Justin Croson of Seven Valleys, remains at large.
Surveillance footage shows a group of men looking through Mama Venezia's Pizzeria and later running into the establishment with masks, 6abc reports.
The group is later seen running out of the pizzeria after owner Ying Ngov, a 56-year-old immigrant from China, told the outlet they stole beers from her.
Ngov ran out after the suspects with a snow shovel, but one of the men retaliated by violently pushing her to the ground, 6abc says.
Ngov was able to get up, but not before another man was caught on video punching her in the face to which she then dropped to the ground and received a beatdown by the group, the outlet reports.
Ngov told the outlet that she blacked out and hopes to be paid for the beers by the group who brutally beat her.
Ngov's family reportedly filed a police report, but police say they don't have an update on the investigation, the news outlet reports.
Police are encouraging those who have any information on the whereabouts of the remaining suspect to contact (610)-270-1476 or NPDtips@norristown.org.
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