➜  ~ git:(master) ✗ sudo pacman-key --delete 962DDE58
==> Updating trust database...
gpg: next trustdb check due at 2016-01-22
➜  ~ git:(master) ✗ sudo pacman-key -r 962DDE58
gpg: key 962DDE58: public key "bohoomil (dev key) <bohoomil@zoho.com>" imported
gpg: Total number processed: 1
gpg:               imported: 1
==> Updating trust database...
gpg: next trustdb check due at 2016-01-22
➜  ~ git:(master) ✗ sudo pacman-key --lsign-key 962DDE58
  -> Locally signing key 962DDE58...
==> ERROR: 962DDE58 could not be locally signed.