There are new questions about whether the United States could have acted sooner to try to rescue American journalist James Foley and other hostages from ISIS. 

Fox News' chief intelligence correspondent Catherine Herridge reported new information today on "Happening Now."

She reported that as early as May there was "strong and specific information" on where the American and British hostages were being held in Syria.

A source told Fox News that the rescue mission was not approved until July, however, because the White House wanted more intelligence.

In an interview with Greta Van Susteren, Foley's parents also said they believed that specific information about their son's location was available sooner.

"It was much too late, Greta. It was much too late," said Diane Foley, adding that it was "hinted" to them that the government "knew just where [the hostages] were."

Herridge noted that at the time, the administration claimed the mission was approved as soon as there was enough intelligence. 

American special forces were sent into Syria in an attempt to rescue the hostages, but Chairman of the Joint Chiefs of Staff Gen. Martin Dempsey said the hostages had been moved by the time the mission was carried out.

Herridge explained that the question now is whether the White House had a higher threshold for intelligence than those who would be attempting the rescue. 

Foley was beheaded by ISIS in August and a second American journalist, Steven Sotloff, was beheaded in early September.

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Watch her full report above and the "On the Record" clip below.