The damage at Mt. Carmel Cemetery, which the police are attributing to vandalism, was discovered by a New Jersey man who was there visiting his father's grave on Sunday morning.
Last week, almost 200 headstones were damaged at Chesed Shel Emeth Society cemetery in St. Louis, the oldest Jewish cemetery in Missouri, established in 1888.
Police said that the incident at the city's Mount Carmel Cemetery was an act of vandalism and have opened an investigation, according to a local ABC affiliate.
It was not immediately clear if the damage was from a hate attack.
Two former worldwide rugby players held in Paris over alleged cocaine posession
He retired after the 2014-15 season for Toulon in France, with O'Connor as a teammate, but has returned to action this season. French media reported that Williams "threw baggies of cocaine on the floor".
A police spokeswoman said police from the 15th District were dispatched to investigate the damage.
"#Philadelphia Jewish cemetery desecration is shocking and a source of worry", tweeted Israeli Foreign Ministry Spokesman Emmanuel Nahshon.
"It's just very disheartening that such a thing would take place", Mallin was quoted as saying. "We condemn this vile act of vandalism and those who perpetrate it in the strongest possible terms". "Full confidence #US authorities catch and punish culprits".
The Jewish Federation of Greater Philadelphia said it would begin accepting donations at its website, jewishphilly.org, on Sunday to raise money for repairs.