  Neutron-rich nuclei in the vicinity of the $N=40$ island of inversion are
characterized by shell evolution and exhibit deformed ground states. In several
nuclei isomeric states have been observed and attributed to excitations to the
intruder neutron $1g_{9/2}$ orbital. In the present study we searched for
isomeric states in nuclei around $N=40$, $Z=22$ produced by projectile
fragmentation at RIBF. Delayed $\gamma$ rays were detected by the EURICA
germanium detector array. High statistics data allowed for an updated decay
scheme of $^{60}$V. The lifetime of an isomeric state in $^{64}$V was measured
for the first time in the present experiment. A previously unobserved isomeric
state was discovered in $^{58}$Sc. The measured lifetime suggests a parity
changing transition, originating from an odd number of neutrons in the
$1g_{9/2}$ orbital. The nature of the isomeric state in $^{58}$Sc is thus
different from isomers in the less exotic V and Sc nuclei.
