Allegheny County Police and West Mifflin Police are expected to announce an arrest in a Sept. 24 shooting at Kennywood that injured three.
A news conference is scheduled for 11 a.m. Thursday.
No other information was immediately available.
Police say a fight between two groups led to three people, including two teenagers being shot. All three are recovering.
The park has since reopened with enhanced security measures.
Stay with News Radio KDKA for the latest details.
