In Ethiopia, since November 2020, there has been a civil war between the government and rebels in the Tigray region.
It is currently unclear whether the arrest of the two Swedish citizens is linked to the conflict.
In the capital Addis Ababa, government troops have in recent months carried out several raids on people of Tigranian descent and many are now living in hiding, for fear of being arrested.
The situation is judged to be so serious that the Swedish Migration Agency has temporarily suspended the deportation of people of Tigrean descent to Ethiopia.
The Ministry of Foreign Affairs has also urged Swedes to leave the country.
UN drivers released
SVT's Africa correspondent Johan Ripås has met Aman, one of many tigers who have been affected.
Four months ago, police stepped into his workplace and arrested him along with seven co-workers.
- I was arrested just because I'm a tiger.
- It was terrible in prison where there were no candles, food or beds, he says.
Earlier this week, about 70 drivers working for the United Nations World Food Program (WFP) were released.
They had previously been arrested in Afar province, through which the only passable road to the war-torn Tigray region runs.
The UN has repeatedly sounded the alarm about possible war crimes and human rights violations in the conflict.