The group of as many as 40 merged onto I-78 westbound from State Route 22 around 8:30 p.m. on Thursday, July 7, Trooper Nathan Branosky said.
The group took Exit 49B and turned onto Tilghman Street in Upper Macungie, where a two-vehicle crash occurred and one person was arrested, police said.
In an attempt to locate the suspects, police released three photos of a portion of the group on the highway.
Anyone with information on their identities is asked to contact PSP - Fogelsville Station at (610)- 395-1438 and reference incident number PA22-883322.
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