Unlock an iCloud locked iPhone 5?

So recently i bought an iPhone 5 (2nd hand). The phone is fabric unlocked, but on the other hand iCloud locked.
Is there any way i could reset/erase/deinstall this iCloud so i could use my phone
PS: I bougth whis phone cheap so maybe it is stolen

That phone sounds stolen. You will not be able to get in to it until you get the old owner to sign in and turn off iCloud so you can sign in to your account. The phone is now in activation lock mode