countrys security agencies public prosecutor ghassan el khoury questioned maj gen tony saliba the head of state security according to staterun national news agency it gave no further details but other generals are scheduled to be questionedstate security had compiled a report about the dangers of storing the material at the port and sent a copy to the offices of the president and prime minister on july 20 the investigation is focused on how the ammonium nitrate came to be stored at the port and why nothing was done about itnajjar the public works minister said he learned about the materials presence 24 hours before the blast receiving a report about the material and holding a meeting with port officials before calling its chief hassan korayetemi wrote a report in the morning the explosion happened in the evening najjar said asked why he only learned of it the day before najjar said i dont know truly i dont knowabout 20 people have been detained after the blast including the head of lebanons customs department and his predecessor as well as the head of the portdozens of people have been questioned including two former cabinet ministers according to government officialson sunday world leaders and international organizations pledged nearly usd 300 million in emergency humanitarian aid to beirut but warned that no money for rebuilding the capital would be made available until lebanese authorities commit themselves to the political and economic reforms demanded by the people