House investigators are trying to find out who a mysterious '-1' number Giuliani frequently spoke with during Ukraine pressure campaign belongs to

Alex Wong/Getty Images

• House Intelligence Committee Chairman Adam Schiff told CNN that the panel is probing a mysterious unlisted number Rudy Giuliani called while engaged in the search for damaging information from Ukraine on Joe Biden, a leading Democratic presidential candidate. 
• "We can't confirm yet who that '-1' number belongs to, but certainly there was indications in the trial of Roger Stone that when he was communicating with the president, it would show up in phone records as a '-1' number," Schiff told CNN's Anderson Cooper Tuesday. 
• Some Republicans have portrayed Giuliani as a rogue agent when he sought to pressure Ukraine to announce a Biden probe, but mounting evidence suggests that he was acting with the president's direct approval. 
• The president's search for a Biden probe is currently the subject of the first impeachment inquiry in two decades. 
• Visit Business Insider's homepage for more stories.

House Intelligence Committee Adam Schiff said that the panel is investigating who a mysterious "-1" number Rudy Giuliani was calling during his Ukraine pressure campaign belonged to. 

On Tuesday, the committee made public call logs belonging to several individuals key to the impeachment inquiry into President Donald Trump. Among them was a log of calls made by Giuliani, the president's personal attorney. 

See the rest of the story at Business Insider

NOW WATCH: Extremists turned a frog meme into a hate symbol, but Hong Kong protesters revived it as an emblem of hope

See Also:

• Trump calls Trudeau 'two-faced' after the Canadian prime minister appeared to mock him behind his back
• Trump went off at the NATO summit with wild comments about climate change, ISIS fighters, and Adam Schiff
• Trump claimed he doesn't know Prince Andrew. These photos say otherwise.