Srinagar, Four persons were arrested along with arms and ammunition, including four grenades, in south Kashmir district of Shopian, official sources said on Wednesday.Following specific information, a joint team of police and army arrested four persons — identified as Sajad Ahmad Dhobi, Imtiyaz Ahmad, Parvaiz Ahmad and Shaid Manzoor — in Shopian. Arms and ammunition, including four grenades and 100 rounds of AK-47 were recovered from their possession. Police have registered a case and initiated investigation into the incident. More arrests are likely in coming days, the sources said.