Indigo Boarding Pass Scam

My Mother just received this mail, from original email id Indigo, We did not book this, What should i Do now? Complain on cyber crime website? I see this as a scam or something.

https://preview.redd.it/nk37krq6i8mg1.png?width=2532&format=png&auto=webp&s=0c4ca434f2868179201d6541f936ac985ae6bc6b

https://preview.redd.it/xnb910yuh8mg1.png?width=2248&format=png&auto=webp&s=16d2c8d22de29d84c8ab6f90860308c0a3289198