The acting police commander in Papua New Guinea's Enga Province says the area is now peaceful, after extensive post election violence.
The violence across the Highlands claimed more than 40 lives, most of those in Enga.
But commander Epenis Nili said police, working with the provincial government, have visited the troubled areas and received commitments from tribal groups to end their fighting.
He said the groups have signed agreements to keep the peace, while police are also clamping down on alcohol access and gun smuggling.
Mr Nili is encouraging Engans living outside the province to return for the holiday.
"Enga is at peace. You are welcome to come and visit your loved ones. I have also instructed my men to conduct roadblocks - we have a checkpoint where we are searching for liquor, smuggling of alcohol, weapons and all that," he said.
"So police are patrolling day and night, making sure that people will celebrate this Christmas in a christianity way."