The Palestinian Football Association said Obeid was killed in an attack by the Israeli military in southern Gaza while waiting to collect aid at a distribution point.
His family said it was a tank shell that killed him.
Responding to Salah’s post on X, an Israeli military spokesperson Nadav Shoshani said: “Hey Mohamed, After an initial review, we found no records of any incidents involving Suleiman al-Obeid. In order to take a closer look, we need more details.”
Obeid, who had played for the Palestinian national team, was still playing for his club in Gaza when the war between Israel and Hamas began in October 2023.
Hamas attacked Israeli towns and villages killing more than 1,200 people. Israel in response has laid waste to the Gaza Strip, a coastal enclave housing more than 2 million people, and killed some 61,000 Palestinians.
Most have been killed by airstrikes, artillery and gunfire, but a growing number are starving to death.