POLICE investigating a string of suicide bombings that killed 28 bystanders in downtown Casablanca are focusing on a homegrown Islamic militant group with suspected ties to the al-Qaida terror network.

Investigators raided Islamic militant strongholds across Morocco today in search of suspects linked to the suicide bombings in Casablanca that killed at least 28 people.

Five “groups of kamikazes” – 14 attackers in all – carried out the deadly series of suicide bombings in Casablanca, Morocco’s commercial capital, killing 28 people, the interior minister said.