The U.S.-based company attempted its first international launch on Monday,

but reported that the mission encountered a problem about two hours after the plane took off.

A mission to launch the first satellites into orbit from Western Europe suffered an “anomaly” Tuesday, Virgin Orbit said.

The U.S.-based company attempted its first international launch on Monday,

using a modified jumbo jet to carry one of its rockets from Cornwall in southwestern England to the Atlantic Ocean where the rocket was released.

The rocket was supposed to take nine small satellites for mixed civil and defense use into orbit.

But about two hours after the plane took off, the company reported that the mission encountered a problem.

“We appear to have an anomaly that has prevented us from reaching orbit. We are evaluating the information,” Virgin Orbit said on Twitter.

Virgin Orbit, which is listed on the NASDAQ stock exchange,

was founded by British billionaire Richard Branson. It has previously completed four similar launches from California.