The British embassy in Baghdad said that a British diplomatic vehicle was hit by an IED on Tuesday morning on the airport road in Baghdad, but caused no injuries.

There was no immediate claim of responsibility. Separately, at 1 a.m. on Tuesday, two Katyusha rockets landed inside Baghdad’s heavily fortified Green Zone, which houses government buildings and foreign missions, but caused no casualties or damage, the military said in a statement.

Rocket attacks against US targets have increased over the past few weeks.

Washington blames such attacks on Iranian-backed militia groups. Iran has not directly commented on the incidents but little-known groups believed to be connected to Iran-backed militias have claimed responsibility some attacks.

Iraq, often the scene of spillover violence from US-Iran tensions, seeks to avoid being drawn into any regional conflagration.\

The Middle East came close to a full conflict in January after a US drone strike killed Iranian General Qassem Soleimani and Iraqi paramilitary chief Abu Mahdi al-Muhandis at Baghdad airport.

Iran-backed militias have sworn to avenge their deaths.