One person has been killed and at least ten others injured in the Pakistani city of Hyderabad after hand grenades were thrown in two separate attacks by people riding motorcycles.

No group has said it was responsible for the attacks.

Police say they have made a number of arrests and that all those being detained belong to a local political group, Jeay Sindh Mahaz, which had called for a one-day strike today to protest against the imposition of governor's rule in Sindh province.