LONDON, Jan 29 - Jaish al-Adl, a Sunni militant group, claimed responsibility for explosions in the city of Zahedan, in southeastern Iran, that wounded three police officers. The group said in a statement it had targeted a police station with 'two strong bombs', damaging a police car and a police motorcycle. Iranian officials said the explosions were caused by percussion grenades, and left three police officers with minor injuries.