The Lebanese army seized 75 missiles allegedly belonging to an Islamist group in the southern part of the country, security officials said Saturday.

The officials said the "Grad" missiles were found in a flour mill in the village of al-Biri late Friday. The officials, speaking on condition of anonymity because they were not allowed to speak to the media, said the missiles belonged to al-Jamaa al-Islamiya.

The officials did not provide details on the militant group but said authorities arrested the owner of the flour mill along with his wife, son, cousin and another man.

The security officials said the missiles had been stored by the group for more than 10 years in the Chebaa Farms area close to Lebanon's border with Israel. The group allegedly moved the weapons to al-Biri before U.N. peacekeepers were deployed there over the summer to monitor the cease-fire that ended the 34-day war between Hezbollah and Israel.

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