Police activity at the foot of the Ben Franklin Bridge in Philadelphia is causing drivers to sit in a miles-long backup that extends into New Jersey Friday night.

SkyForce10 was over the bridge just before 9 p.m. on Aug. 29 where cars could be seen on the westbound side stuck in a standstill that started in New Jersey and stretched over the Delaware River.

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The backup appears to be stemming from what looks like police activity in Philadelphia.

No word yet on what caused the police activity or if anyone was hurt.

This is a developing story. Check back here for updates.

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