( CNN ) -- The Army announced Tuesday that a sergeant first class assigned to an assault prevention program at Fort Hood , Texas , is under investigation for sexual assault . The soldier , who was not named in an Army statement , has been suspended from all duties . Specifically , the soldier is under investigation for `` pandering , abusive sexual contact , assault and maltreatment of subordinates , '' the statement said . Special agents from the U.S. Army Criminal Investigation Command are conducting the probe . No charges have been filed . `` This is so contrary to everything upon which the Army was built , '' Secretary of the Army John McHugh said during testimony before the House Appropriations Committee Defense subcommittee , according to the statement . `` To see this kind of activity happening in our ranks is really heart-wrenching and sickening . '' McHugh spoke generally about sex abuse crimes in the military . Army investigates trend in military sexual assaults . `` As I said to our new Brigadier General Corps when I spoke to them about two weeks ago , 'You can do everything from this point forward in your military career perfectly , but if you fail on this , you have failed the Army ' , '' he reportedly said . The solider was assigned as a Sexual Harassment/Assault Response and Prevention program coordinator when the allegations surfaced . `` There is a distinct possibility , '' that some sort of prostitution-related activity was involved , an administration official told CNN . But investigators have not yet determined the scope of that possibility or the potential criminal misconduct . Defense Secretary Chuck Hagel was made aware of the case earlier Tuesday . He met with McHugh and directed him to ensure that `` all of those who might be involved are dealt with appropriately , '' according to Pentagon spokesman George Little . `` I can not convey strongly enough his frustration , anger and disappointment over these troubling allegations and the breakdown in discipline and standards they imply , '' Little said about his boss . `` To address the broader concerns that have arisen out of these allegations and other recent events , Secretary Hagel is directing all the services to retrain , recredential , and rescreen all sexual assault prevention and response personnel and military recruiters , '' he said . After sex assault case , Hagel seeks changes to military legal process . According to a Pentagon report released last week , the number of service members anonymously reporting a sexual assault grew by more than 30 % in the past two years . The Defense Department estimated that more than 26,000 troops experienced an episode of `` unwanted sexual contact , '' a huge jump from 19,300 in the 2010 report . The actual number of sexual crimes reported in fiscal year 2012 was 3,374 , a 6 % increase over the previous year , the report said . Military officials worry that many victims do n't come forward because they fear retaliation . But the numbers might indicate that more victims are willing to report crimes than in the past . `` I am outraged and disgusted by the reports out of Fort Hood today , '' said House Armed Services Committee Chairman Howard P. `` Buck '' McKeon , calling them the `` latest chapter in a long , sordid history of sexual abuse '' in the military . The California Republican has a granddaughter in the Army . `` I see no meaningful distinction between complacency or complicity in the military 's latest failure to uphold their own standards of conduct . Nor do I see a distinction between the service member who orchestrated this offense and the chain of command that was either oblivious to or tolerant of criminal behavior , '' he said . Military rape victims : Stop blaming us . The allegations of abuse come soon after an Air Force officer was charged with sexual battery stemming from an incident in Northern Virginia . Lt. Col. Jeffrey Krusinski , a 1994 graduate of the Air Force Academy who served tours in both Iraq and Afghanistan , was arrested this month and accused of grabbing a woman 's buttocks and breasts in a parking lot in Arlington County not far from the Pentagon . He had been in charge of a military unit aimed at preventing sexual assault . Krusinski , who has since been removed from that position , made an initial court appearance last week . He did not enter a plea . `` To say this report is disturbing would be a gross understatement . For the second time in a week , we are seeing someone who is supposed to be preventing sexual assault being investigated for committing that very act , '' said U.S. Sen. Kirsten Gillibrand , D-New York . She plans to unveil legislation this week that would remove chain of command influence from the prosecution of such offenses . `` We have the best and the brightest serving in our military . We have the greatest military in the world . And we ask everything of them . We ask them to even die for their country . We should not be allowing them to be subject to sexual assault and rape , '' said Gillibrand . After top Air Force officer charged in sex assault , military faces questions . CNN 's Barbara Starr , Larry Shaughnessy , Steve Almasy and Ashley Fantz contributed to this report .
NEW : Prostitution-related activity may have been involved , says an official . Service members anonymously reporting a sexual assault grew by more than 30 % . `` No meaningful distinction between complacency or complicity , '' says Rep. McKeon . Soldier was assigned to a sexual harassment and assault response program .