@DDollar here explains that a taxpayer may be allowed to claim an itemized deduction for theft loss on Schedule A Itemized Deductions.
Best answer by @GeorgeM777 here explains that TurboTax does not support IRS form 4684 Casualties and Thefts to report such a theft or loss.
IRS website here references revenue rulings that apply to these losses.
We recommend that you visit a tax professional to handle your situation.