A releasable expansion bolt having an expansion sleeve with a first end, a second end, a cylindrical outer lateral surface and, on the inside, an inner cone section having a cross-sectional area that tapers towards the second end; a cone bolt with a cone section which interacts with the inner cone section for expanding the expansion sleeve as a result of an axial relative movement of the expansion sleeve and the cone bolt; and a tensioning device connected to the first end section of the expansion sleeve for adjusting the cone bolt in the axial direction relative to the expansion sleeve. The tensioning device comprises a pressure bolt held in a form-fitting manner in the axial direction in the area of the first end section of the expansion sleeve and adjustable in the axial direction relative to the expansion sleeve. An outer end of the pressure bolt has a foot opposite the driving contour that acts on the cone bolt when tightening the pressure bolt to expand the expansion sleeve. The end surface of the cone bolt facing the tensioning device has at least one connection contour for connecting, in a form-fitting manner in the axial direction, a connection part of a release tool for releasing the expansion bolt. Also described is a connection arrangement and a method for forming such a connection arrangement.