Du Wei, the Chinese ambassador to Israel was found dead in his home in a Tel Aviv suburb on Sunday, an Israeli police spokesman said.
“As part of the regular procedure, police units are at the scene,” the spokesman said.
Wei, 58, was found dead on his bed and appears to have died in his sleep.
He is survived by his wife and son, who were not in Israel at the time of his death.
Israel’s Channel 12 TV, quoting unidentified emergency medical officials, said initial indications were that Wei died in his sleep of natural causes.
Earlier this week, the Chinese ambassador condemned US Secretary of State Mike Pompeo for the comments he made during a one-day trip to Israel.
On Wednesday, Mr Pompeo denounced Chinese investments in Israel and accused China of withholding information about the coronavirus outbreak.