The Saudi Arabia Government said on Sunday more than 1,300 people have died on this year's Hajj pilgrimage.
Stampedes, tent fires and other accidents have caused hundreds of deaths during hajj to Saudi Arabia in the past 30 years.
The Line is a futuristic city designed to house nine million residents.
Piles of rainbow items were being seized, including stick-on nails, bags, tutus, pencil cases and stuffed animals.
Khashoggi wrote opinion columns critical of the Crown Prince's policies.
Forgiveness from the family could lead to a formal pardon.