CPC Section 19

Suits for compensation for wrongs to person or moveables.

Where a suit is for compensation for wrong done to the person or to moveable property, if the wrong was done within the local limits of the Jurisdiction of one Court and the defendant resides, or carries on business, or personally works for gain, within the local limits of the Jurisdiction of another Court, the suit may be instituted at the option of the plaintiff in either of the said Courts.

Illustrations
(a) A, residing in [Karachi], beats B in [Quetta]. B may sue A either in [Quetta] or [Karachi].
(b) A, residing in [Karachi], publishes in [Quetta] statements defamatory of B. B may sue A either in [Quetta] or in [Karachi].