He said four weeks have been given to submit the report to find out who was at fault.
Three Sikh soldiers on Tuesday filed a lawsuit against the DoD seeking to serve in the US armed forces without being forced to compromise with their articles of faith.
The new set of rules allows religious accommodations to be approved at the brigade-level. Previously it was at the level of secretary.
A summary of sports events and sports persons, who made news on Monday
Vijayveer Sidhu, 16, shot a gold in the 25m standard pistol event for junior men after combining with Rajkanwar Singh Sandhu and Adarsh Singh to claim the team gold on the last day of the ISSF World Championships.
In a first of its kind lawsuit, a decorated Sikh-American soldier has sued the US military, alleging that because of his religious beliefs he is being subjected to "discriminatory" testing that no other soldier in the US army goes through.
Amandeep Singh Dhami, 28, a fugitive wanted by Federal Bureau of Investigation in Sacramento, California for a shooting incident in 2008 was arrested in Jalandhar, said FBI spokesperson on Tuesday.
The move makes Captain Simratpal Singh, a 28-year-old decorated combat veteran, the first active duty Sikh soldier to receive approval to maintain his articles of faith while actively serving in the US army.