Bontrask, Swd triangular or delta-shaped object report — October 11, 1972

On October 11, 1972, at approximately 1:00 p.m., at Bontrask, Swd, Sweden, Scandinavia / Finland, several observer(s). 6 tiny silent delta/triangle/box-like crafts going toward 7km / 30 second(s). Then 3 going north and 3 going northwest. / Ake Franzen.