One person declined medical treatment.
Ingushetia, a small region adjacent to war-scarred Chechnya in Russia's North Caucasus, has been the site of frequent attacks targeting law enforcement authorities in recent months.
Government critics attribute the growing violence to anger fuelled by alleged abductions, beatings, unlawful arrests and killings of suspects by government forces and local allied fighters.
Murat Zyazikov, the president of Ingushetia, dissolved the regional government on March 12.
Local opposition leaders have renewed calls for Vladimir Putin, Russia's president, to take measures to deal with the political unrest and widespread corruption in the region.