Radio observations with the Atacama Large Millimeter/submillimeter Array confirmed absence of an IMBH near CO-0.40-0.22 and found that the large velocity dispersion of the cloud is created by superposition of two molecular clouds with different line-of-sight velocities. The features identified as signatures of IMBH-cloud interaction in previous studies were confirmed to be artifacts created by erroneous data reduction. Further theoretical studies of the gas cloud and nearby IMBH candidates have been inconclusive but have reopened the possibility, though no observational evidence for existence of an IMBH has been reported after that.