"He sent me a WhatsApp message this morning at 5am saying https://www.nice369.com 'Good Morning'", said Mr Narici. "That was the last I heard from him."
The other victim - Yigit Ali Cavus - was also an engineer.
"He was a brilliant child. He graduated with https://www.nice369.com honours from the Istanbul Technical University and spoke two languages," said his father.
It is not yet clear where they were when the attacks took place.