India's army chief General VK Singh says a report that two key army units were moved towards the capital in January without informing the government is "absolutely stupid".

Provides an overview of the United States, including key events and facts about this superpower

Provides an overview of the United States, including key events and facts about this superpower

Whether it was a psychotic break or underlying mental illness that led a United States Army soldier to allegedly massacre 16 Afghan civilians -- including women and children -- early Sunday morning is still unclear. But as military investigators reportedly interrogate the 38-year-old staff sergeant they say they believe to be behind the killing spree, psychological experts said such actions are generally preceded by strong signals that something is wrong -- signals that, in this case, may have been missed or gone unreported.

Indian officials reject as baseless a newspaper report that the unannounced movement of two key army units towards Delhi in January sparked fears of a coup.