Fears of a return to war in northern Ethiopia are driving many people to leave the region of Tigray just over three years after the civil war there ended.

"Those who can afford it fly, those who can't use buses," one person in the main city of Mekelle told the BBC - going on to explain how large numbers of young people were heading to the capital, Addis Ababa.

The prices of goods are rocketing as people stock up on essentials and a run on the banks has meant there is now a daily limit on cash withdrawals of around 2,000 birr ($13; £10) per person.

With cash shortages reminiscent of the brutal two-year conflict that ended in November 2022, those wanting to making big transfers often have to pay extra charges to do them electronically.

What has happened to the peace deal?

The civil war between the Ethiopian government and the Tigray People's Liberation Front (TPLF) saw an estimated 600,000 people killed, according to an envoy from the African Union (AU), and the region driven to the precipice of famine.

So great fanfare and relief greeted the agreement that was brokered by the AU in November 2022.

After it was signed in South Africa's capital, Pretoria, the guns were silenced, basic services were restored and normality began to return to Tigray.

However, fears were immediately raised over the absence of two of the warring parties from the signing ceremony:

Eritrea, which borders Tigray to the north. Its forces had fought alongside the Ethiopian army for control of the region.

Amhara, a region which neighbours Tigray to the west and whose fighters also fought on the side of the Ethiopian army. In the early weeks of the war they seized land in the agriculturally rich area of western Tigray, which remains a source of dispute.

The Ethiopian government has since fallen out with both its former ally Eritrea and the armed militias from Amhara.

And as the country heads towards elections in June, the government has also been at loggerheads with the TPLF over the failure to resolve the future of disputed areas in Tigray, like those occupied by Amhara forces.

It has all led to widespread distrust and means the Pretoria accord is unravelling fast.

How have things escalated?

There have been reports of a troop mobilisation in the north of Ethiopia and the UN has since described the situation in the region as "highly volatile".

In late January brief clashes were reported between federal troops and Tigrayan fighters, who are agitating for the return of areas still under Amhara control.

Drone strikes hit the region and flights to Tigrayan cities were suspended for nearly a week.

Ethiopia has also accused Eritrea of meddling by backing Tigrayan forces, which it denies. The authorities in Addis Ababa see a growing closeness between the TPLF and Asmara as a threat.

Last October, Ethiopia's foreign minister wrote a letter to the UN chief alleging that Eritrea was forging an alliance with "hardliners within the TPLF" to "wage war" against Ethiopia.

Last week, TPLF head Debretsion Gebremicheal said war was "looming" over Tigray and "the people… will be under the obligation to resist aggression and defend themselves to maintain their existence".

Why is the TPLF upset?

It wants back territory it lost during the war, like western Tigray.

Around a million people fled that area during the conflict and have been living in poor conditions in makeshift camps throughout Tigray. They have not been able to return home.

A decision taken by the election board earlier this week that in June disputed areas would vote independently - not under the jurisdiction of either Amhara or Tigray - has further infuriated many Tigrayans.

The TPLF, which was designated as a terrorist group during the war, also wants its legal status as a political party to be reinstated.

But the process has been dogged by disagreements and the electoral board recently revoked the TPLF's licence - meaning it cannot contest the upcoming elections.

The TPLF itself has split into factions, with some members setting up a new party, complicating an already tense situation.

The party had dominated Ethiopia's political landscape for two decades until Abiy Ahmed became prime minister in 2018 and set up a new party, which TPLF leaders refused to join.

Abiy's supporters regard those left in the TPLF as "hardliners", blaming them for failing to properly implement the peace deal and cosying up to Eritrea – leaving allegiances in the region dramatically different to the situation in 2020.

Why has Ethiopia fallen out with Eritrea?

The two neighbours have long had a volatile relationship - flip-flopping from being friends to enemies.

Eritrea officially seceded from Ethiopia in 1993 - but later fought a deadly border war.

In fact, Abiy won the Nobel Peace Prize in 2019 for ending the 20-year military stalemate with Eritrea that followed.

But friendly relations further forged during the Tigray war have given way to a war of words over the Red Sea.

This is because Ethiopia, the world's most populous landlocked nation, lost its Red Sea ports when Eritrea got its independence - taking with it a 1,350km (840-mile) coastline

For Abiy this has become an existential crisis and he has been pushing for ownership of Eritrea's southern port of Assab - about 60km from the border - and hinted at the desire to take it by force.

"The Red Sea and Ethiopia cannot remain separated forever," Abiy said during a recent parliamentary address.