Witnesses alerted nearby officers when a female commuter fell from the platform onto Track 4 just after 2 p.m. Monday, NJ Transit Spokesman Paul Milo said.
"Officers immediately halted train traffic and rushed in to render crucial aid and assistance," NJ Transit Police said in a Facebook post.
Service was out for approximately 25 minutes, but there were no delays, NJT officials said.
Offices performed life-saving efforts for approximately 10 minutes, Milo said. The victim's current condition was not known.
"For us, protecting you is both our responsibility, and our dedicated mission," the department said.
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