THE parents of murdered American ISIS hostage Kayla Mueller hope the raid which killed the group’s leader will finally reveal what happened to their daughter.

Mueller, 26, was a humanitarian worker from Prescott, Arizona, who was captured while leaving a hospital in Aleppo, Syria, during that nation's bloody civil war in 2013.

She is believed to have been tortured and raped by terror kingpin Abu Bakr al-Baghdadi himself until her death 18 months later in 2015.

Her parents were sent a photo of her dead body but never found out who killed her or where her final resting place was.

But Baghdadi was killed at his Syrian hideout in a dramatic US raid – named after Kayla – on Saturday night.

And Carl and Marsha Mueller now hope intelligence gained in the operation can finally answer their questions.

Carl told Fox News: "Our hope is to seize this moment.

"This moment is the fact that al-Baghdadi has been killed, some of his lieutenants have been captured and we are hoping they have the information we’ve been seeking.

"That is who killed Kayla, where was she killed and where was she buried."

What truly happened to her and what aren’t we being told?"

The grieving parents also blasted former president Barack Obama, who was in office at the time their daughter was snatched and killed.

Marsha told the Arizona Republic: “I still say Kayla should be here and if Obama had been as decisive as President Trump maybe she would have been.

“I still want to know: where is Kayla and what truly happened to her and what aren’t we being told?

“Someone knows and I’m praying with all my heart that someone in this world will bring us those answers.”

The couple revealed some of the horrors their daughter endured at the hands of her savage captors during her final months.

Carl said: “She was held in solitary confinement. She was tortured. She was intimidated. She was ultimately raped by al-Baghdadi himself.”

And Marsha – who praised the raid and thanked Donald Trump – said of the terror chief: "He thought she was beautiful, and… he killed her.

"He was an animal and he was a gutless animal."

Donald Trump said Baghdadi died “crying, whimpering and screaming” along with eight of his henchmen after US soldiers blasted their way into his compound.

Baghdadi – who had led the murderous cult since 2010 when it was still an underground al-Qaeda offshoot in Iraq – had been the subject of an international manhunt for years and had a £19.4m ($25m) bounty on his head.

He was tracked down after a hero spy stole his underpants to identify him by his DNA and gave a room-by-room layout of his hideout.

The families of British terror victims have congratulated US special forces, saying "good riddance" in the wake of Baghdadi's death, as his fanatics were behind the bombing of a Manchester gig by Ariana Grande, and inspired the 2017 London Bridge attack.

The terror group’s new leader has been named as feared ex-Saddam henchman Abdullah “The Professor” Qardash.

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