  We have discovered a transient X-ray source, RX J1420.4+5334, which displays
a ROSAT flux variation of >150 between the ROSAT All-Sky-Survey in 1990 and a
preceding pointed ROSAT observations in July 1990. Optical observations suggest
a non-active galaxy as the only visible counterpart. We therefore tentatively
identify RX J1420.4+5334 as a tidal disruption event in a non-active galaxy.
