The incidents all occurred in the Russian North Caucasus republic late Monday, when one soldier was also injured in a grenade attack in neighboring Chechnya
The latest took place at approximately 23:47 Moscow time (19:47 GMT) when unknown people fired a grenade at an Interior Ministry arms store in Ingushetia's largest city, Nazran, injuring two servicemen.
At around 20:30 Moscow time (16:30 GMT) two explosive devices were set off as the official vehicle of the deputy interior minister passed. The official was not in the car and the driver was unharmed.
Earlier Monday, three men were found shot dead in Nazran by local residents. Two men were killed in a car by automatic weapon fire, while a third body was on the ground near the vehicle.
In neighboring Chechnya, unknown assailants fired automatic weapons and grenades at Interior Ministry troops near the capital, Grozny, wounding one of the soldiers.
Separately in Grozny, explosive experts from the Interior Ministry and members of the Federal Security Service (FSB) disarmed a homemade explosive device at a car repair shop. The bomb contained plastic explosive and nuts and bolts to increase its killing power.
Although the active phase of all-out counter-terrorist operations in Chechnya ended years ago, sporadic clashes with small militant groups and attacks on police and officials in this and neighboring republics are not uncommon. Ingushetia has seen a sharp increase in attacks on law enforcement and military personnel during the first eight months of 2008.