Serbian officials denied Sunday that security forces used a military-grade sonic weapon to disperse and scare protesters at a huge anti-government rally in the capital. Opposition officials and Serbian rights groups claimed the widely banned acoustic weapon that emits a targeted beam to temporarily incapacitate people was

Protesters had accused the police of using the outlawed device against crowds as hundreds of thousands gathered in Belgrade. The protests were described as the largest in Serbia's history.Serbia' s president Aleksandar Vucic has denied that his police forces used a banned' sonic weapon' to disperse protesters in Belgrade.