India's currency suffered a security breach that government officials kept hidden, according to a new report.

While printing the , certain security features were compromised in 2012, CNN-IBN reported Thursday. An internal investigation revealed that officials intentionally hid the breach after it was discovered, the report said.

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CNN-IBN's report said that a security thread inserted in rupee paper notes at the Hoshangabad Security Paper Mill were from an Islamic nation and "examination of the 10 rupee notes showed indecipherable text on the security thread, the notes either had Arabic text inscribed on the security thread or did not have any security thread at all."

The defective thread was reportedly supplied by Aristocraft International, but the firm declined to comment to CNN-IBN.

For more on the alleged security lapses, see CNN-IBN's full report.