"Over the last four or five years, we've had about seven fatalities involving pedestrians along the [North Fifth Street] highway."
The state has extended a mobile testing site across from FirstEnergy Stadium for another week.
Results are expected in three to four days.
"We believe that nature is essential to our quality of life."
The police said several incidents occurred at the same time Monday night, and they are still looking into if they are related.
U.S. Sen. Pat Toomey said he's looking forward to spending more time with his family at home once his current term expires.