Authorities in the wealthy city-state of Monaco have launched a manhunt that’s stretched across the border into France after several people were wounded in an explosion caused by a bomb that was planted in a residential building.

The bomb exploded shortly before 9 p.m. local time Monday, with the wounded, including a child, transported to hospital in Nice in neighboring France, according to the Monaco government.

A man was caught on camera fleeing to Beausoleil, a French town which borders Monaco, the town’s mayor Gérard Spinelli said in a press conference, according to the Associated Press.

About 40 French soldiers and two helicopters have been deployed to assist with the chase, according to CNN-affiliate BFMTV.

Violent crime is virtually nonexistent in Monaco, a city state located on the Mediterranean Sea, home to roughly 40,000 people and known as a playground for the wealthy.

Monaco’s Prince Albert II said in a statement that “all the relevant State services are currently mobilized, in close cooperation with the French authorities.”

“We trust them to establish the circumstances of this tragedy as swiftly as possible, to identify those responsible and to provide every necessary response, at every level.”