Mohamed Sabry Soliman is being held on $10 million bond since being taken into custody after an attack on a gathering to support Israeli hostages.

Soliman, 45, of Colorado Springs left messages to his wife and five children hidden in a desk drawer before he left to carry out the attack, which he later told cops had been in the works for more

FBI describes Boulder attack as targeted terrorism by Mohamed Sabry Soliman, who allegedly used explosives at a pro-Israel march, leaving eight injured, one critically.