U.S. President Donald Trump reportedly told Israeli Prime Minister Benjamin Netanyahu during the latter’s visit at the White House last month that Israel could jeopardize its security cooperation with the United States if it doesn’t reduce its ties with China.

Channel 13 and Axios reported the development, citing Israeli officials.

The U.S. concerns over the Haifa port deal have come from National Security Advisor John Bolton and U.S. Deputy Secretary of Energy Dan Brouillette.

During a state trip to Israel in January, Brouillette expressed alarmregarding “certain Chinese foreign investment in Israel,” an Energy spokesperson told Israeli business news outlet Calcalist on Wednesday.

The administration is concerned about China using Israeli firms to discover U.S. secrets and about Beijing passing on Israeli technological specifics to its ally, Iran, an enemy of Israel.

“We are all concerned about theft of intellectual property and Chinese telecoms companies that are being used by China for intelligence gathering purposes,” a senior Trump administration official told The Wall Street Journal.

The White House didn’t reject the Channel 13-Axios account, but declined to comment, while the prime minister’s office said, “The story is not true.”