Iraqi officials gave contradictory accounts on Tuesday about whether or not Baghdad had agreed to buy $195 million worth of arms and ammunition from Iran as reported by Reuters, a deal that if confirmed could damage Iraqi-U.S. relations.

The Defence Ministry denied any such deal had been done, while a senior Iraqi government lawmaker who heads parliament’s security and defence committee said Baghdad had bought “some light weapons and ammunition” from Tehran.

The United States has demanded explanations from Iraq since such a deal would violate U.S. and U.N. sanctions imposed on Iran over its disputed nuclear program. An influential U.S. senator said the sale of 24 Apache attack helicopters to Iraq should be reconsidered until the matter was cleared up.