( CNN ) -- Stringent restrictions remain in place Monday on about 100 soldiers at a large military base in Washington state after the theft of `` sensitive '' and valuable `` military-grade '' equipment . Members of the Army Criminal Investigation Command are at Joint Base Lewis-McChord trying to find out who is responsible for the missing items , said Maj. Chris Ophardt , a spokesman for the U.S. Army 's I Corps that is headquartered at the base and includes the affected unit . `` Hundreds of items '' are missing from a vault that is inside a building on the base , the spokesman said . They include things such as scopes and night-vision goggles but no guns or ammunition . `` There are no weapons , and there 's no danger to the public , '' Ophardt said . After learning of the thefts , the Army decided on Wednesday to put members of the Army 's 4th Brigade , 2nd Infantry Division on lockdown , preventing soldiers from making phone calls or leaving the unit 's barracks or unit office . The unit has been home from Iraq since September 2010 . These measures were relaxed somewhat on Saturday , with some supervised visits allowed on a case-by-case basis to deal with personal issues and permission granted to eat at the base 's dining facility . Division members , who live either on or off the base , still must sleep at the barracks . There is no timetable as to when all the restrictions will be lifted , Ophardt said , adding that decision will depend on the investigation . `` ( This will ) go on as long as we can gain information about the person or persons involved in the theft , '' said Ophardt , noting no timetable has been set for when the restrictions will be lifted . `` This is being taken seriously , so ( the military ) can get back the equipment that taxpayers paid for . '' Military officials did their monthly inventory of the vault in December . They then did another after the holiday vacation and determined that `` large amounts '' of items were missing -- `` immediately '' precipitating the lockdown , said Ophardt . A $ 10,000 reward has been offered by the Army in the case . He explained that every unit has its own vault , which in this case has two locks -- one on the vault , and another on the door to an abutting office . It has not been determined whether the missing items were stored properly or if someone was able to get into a properly locked vault and made off with the equipment . `` There are a zillion possibilities , '' Ophardt said of what might have happened . The missing items could all `` be bought on the civilian market , just one or two generations older , '' the spokesman said . He added that they have limited use to the public , given the challenges in knowing how to use them and having the right kind of weapon to attach them to . The restrictions on the soldiers affect only a fraction of those at the expansive Joint Base Lewis-McChord , as none of the other roughly 50,000 people on the grounds about 13 miles southwest of Tacoma are directly affected .
Stringent rules are in place on soldiers at home in the state . Rules include the discovery that valuable , ` ` sensitive '' items are missing from a vault . The items include things such as scopes , but no weapons or ammunition . A $ 10,000 reward has been offered for information on the case .