Calls were mounting in Serbia on Monday for an independent investigation into reports that security forces used a prohibited sonic weapon on crowds at a huge peaceful anti-corruption rally last weekend,

Serbian officials are denying that security forces illegally used a military-grade sonic weapon to disperse and scare protesters at a huge anti-government rally

The Serbian government has been accused of using a sonic weapon against anti-government demonstrators during a protest in Belgrade, Serbia. At around 7 p.m. local time on Saturday, during a 15-minute silent vigil,