Essex Head Coach Paul Grayson said he was delighted Mahmood had joined the club.
"I like cricketers who feel they have point to prove to people and he has lots of ability, he's experienced and he's a fit guy who can bowl with good pace as well so we feel Saj will be a real addition to the squad."
More top news
The McLaren was left in bits just minutes after the owner took delivery of it.
A three-storey house has collapsed and businesses have been destroyed following a major fire on a historic high street near Milton Keynes.
Children in a Suffolk school have been mourning the loss of a teenager who was killed by an airgun over the weekend.