(CNN) – The release of further allegations of National Security Agency surveillance efforts caused the Spanish government to summon the U.S. ambassador Monday, and The Wall Street Journal reported that the White House ordered a halt to some eavesdropping on foreign leaders after learning of it this summer.

Quoting unidentified U.S. officials, the newspaper’s website said the wiretapping of about 35 foreign leaders was disclosed to the White House as part of a review of surveillance programs ordered by President Barack Obama after NSA contractor Edward Snowden leaked classified information on the NSA’s phone monitoring systems.

The White House ordered a halt to the monitoring of German Chancellor Angela Merkel and unspecified other leaders, the newspaper reported. The Journal report did not specify who gave the shutdown order or the date it was issued.

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