Jordanian Information Minister Samih Maaytah condemned on Monday the "terrorist" attack that killed 16 Egyptian guards on the border with Israel.
"Jordan condemns the terrorist attack in the Sinai," Maaytah said in a statement.
"The kingdom supports Egypt in fighting all forms of terrorism, which has caused the suffering of many people around the world."
In Sunday's attack, 35 gunmen in Bedouin clothing opened fire on the soldiers and border guards before crossing into Israel in an armored vehicle, Egyptian officials said. The Jewish state said five gunmen were killed on its side.
Egypt and Jordan are the only Arab nations that have made peace with Israel.