BAGHDAD (REUTERS) - ISIS militants fighting to hold on to their Mosul stronghold have displayed the crucified bodies of five people they said gave information to "the enemy", and are back on the city streets policing the length of men's beards, residents say.
The five bodies were put on display at a road junction, a clear message to the city's remaining 1.5 million residents that the ultra-hardline militants from the Islamic State in Iraq and Syria (ISIS) are still in charge, despite losing territory to the east of the city.
Thousands of ISIS fighters have run Mosul, the largest city under their control in Iraq and neighbouring Syria, since they conquered large parts of northern Iraq in 2014.
They are now battling a 100,000-strong coalition including Iraqi troops, security forces, Kurdish peshmerga and mainly Shi'ite paramilitary groups, which has almost surrounded the city and has broken into eastern neighbourhoods.
Residents contacted by telephone late on Tuesday (Nov 8) said many parts of the city were calmer than they had been for days, allowing people to venture out to seek food, even in areas which have seen heavy fighting over the last week.
"I went out in my car for the first time since the start of the clashes in the eastern districts," said one Mosul resident.
"I saw some of the Hisba elements of Daesh (ISIS) checking people's beards and clothes and looking for smokers".
ISIS' Hisba force is a morality police unit which imposes the Sunni militants' interpretation of Islamic behaviour. It forbids smoking, says women should be veiled and wear gloves, and bans men from Western-style dress including jeans and logos. Hisba units patrol the city in specially marked vehicles.
"It looks like they want to prove their presence after they disappeared for the last 10 days, especially on the eastern bank," the resident said.
Mosul is divided into two halves by the Tigris river running through its centre. The eastern half, where elite Iraqi troops have broken through ISIS defences, has a more mixed population than the western, overwhelmingly Sunni Arab side, where ISIS fighters are believed to be strongest.
The militants are putting up a fierce defence after their leader, Abu Bakr al-Baghdadi, told them in a speech last week to remain loyal to their commanders and not to retreat in the "total war" with their enemies.
Iraqi military officials say they have sources inside the city, helping them identify ISIS positions for targeting by the US-led air coalition supporting the campaign, which is also backed by US troops on the ground.
The gruesome public display of the bodies in east Mosul appeared to be a warning against other potential informers.
"I saw five corpses of young men which had been crucified at a road junction in east Mosul," not far from districts which had seen heavy fighting, said another resident.
"The Daesh people hung the bodies out and said that these were agents passing news to the infidel forces and apostates," he said referring to the Western allies backing the campaign and the Shi'ite-led government of Prime Minister Haider al-Abadi.
In another sign of a clampdown on contact with the outside world, one retired policeman said ISIS officials were trying to inspect SIM cards to check on all communications.
"I went to get my pension as usual, but the man at the office refused to give it to me unless I handed over my SIM card," the 65-year-old man, who gave his name as Abu Ali, said. "These are the instructions from Daesh," the man told him.
Many residents close to the fighting have said the scale of the clashes has been terrifying, with the sound of gunfire, mortar bombardments and air strikes echoing through the streets.
In the Zuhour district, still controlled by ISIS on Mosul's eastern bank, witnesses said that cars carrying mortars roamed the streets on Tuesday, but were not seen being fired - unlike in the previous two days.
The relative quiet may reflect a reduction in fighting since Iraq's special forces first broke into eastern Mosul a week ago. They faced fierce resistance, and have not sought to any major advance since then.
One witness said traffic had almost returned to normal in most parts of eastern Mosul and markets were operating, albeit not as busy as before the start of military operations.