Home Office officials have revealed the nationalities of the 28 illegal immigrants found on a lorry in Portsmouth.
It follows calls from Portsmouth South MP Flick Drummond for better security at Portsmouth International Port after the group of migrants made their way in to the city on a HGV from France on Saturday.
The 28 people were arrested by police at the scene.
The Home Office says 10 are Sudanese, seven Ethiopian and 11 Eritrean nationals.
Their cases will now be dealt with by immigration officers.
One child is in the care of social services, and one person remains in hospital.
The rest of the group were passed to immigration officers to be screened.
The driver of the lorry was arrested on suspicion of facilitating illegal entry into the UK, and has been bailed pending further enquiries.