That suspect, Steve Stephens, is wanted for the murder of a man in Cleveland that was recorded on video and posted to Facebook.
Those reports came in around 1 p.m. Monday. The sightings were reported in the Belmont Plateau section of Fairmount Park.
Chopper 6 was over Fairmount Park after police converged on the scene.
Philadelphia school district officials say more than 30 schools were on lockdown during the search. The lockdown was lifted at 2:55 p.m.
Police in Cleveland said in Monday there is a $50,000 reward being offered as the search for Stephens continues.
Authorities searching multiple states say they have no idea what led up to what they say appears to be a random shooting.
Cleveland's police chief said Monday that only Stephens knows the answer.
Police say the 37-year-old Stephens shot a Cleveland retiree picking up aluminum cans Sunday and then posted a video of the killing on Facebook.
In the video, Stephens names a woman and tells the victim, Robert Godwin Sr., that "she's the reason that this is about to happen to you."
Authorities say Stephens is considered armed and dangerous and could be anywhere.
Cleveland police chief Calvin Williams says authorities have already searched every location Stephens has been associated with in the Cleveland area.