Thieves stole prized royal crown jewels from the Strängnäs Cathedral in Sweden, according to the Swedish Police Authority on Tuesday.

Two crowns and a royal orb were taken and the suspects escaped in a motor boat from below the church. 

As of Tuesday night, police were still pursuing the subjects by boat and helicopter, and on land.

The stolen 17th century crowns were from Karl IV and his wife Queen Kristina, who are entombed at the cathedral.