The recent round of serious al Qaeda threats led Chicago officials to make changes to this past weekend's security at Lollapalooza, according to new reports.
Following threats a Senate Intelligence Committee member called "the most serious in years," Chicago police were tuned into rumblings from overseas that the terrorist group was planning imminent attacks on American soil, according to an ABC Chicago investigation.
Police reportedly ramped up bag searches at the three-day music festival and brought in undercover police and bomb-sniffing dogs once the CPD was aware of the seriousness of the threat.
"Even though [authorities feel its focused on embassies abroad, with Lollapalooza here we had to take some extra steps," Police Supt. Garry McCarthy said during a conference.
No terrorist threats were reported from the weekend, though undercover cops did bust at least 10 people on felony drug charges while CPD made a total of 46 felony and misdemeanor arrests during the weekend.
As of Tuesday, U.S. embassies in 19 countries remain closed following the the threat. Meanwhile, government officials are fearing an al Qaeda affiliate has devised an "ingenious" new generation of liquid explosive that ABC News is calling "currently undetectable."