Susanna Feldman, 14, had been missing since May 22 before her body was discovered on the outskirts of Wiesbaden, west Germany

Police in Germany are hunting an Iraqi asylum-seeker over the rape and murder of a teenage girl.

A Turkish man, 35, is already in custody as part of the investigation into the 14-year-old's death.

Susanna Feldman had been missing since May 22 and her body was found on the outskirts of the western city of Wiesbaden, west Germany.

Yesterday, investigators made a gruesome discovery when they found her body in an overgrown patch of forest next to a railway track near Wiesbaden, a city in the central German state of Hesse.

A police investigator said: 'We all assume that the body is Susanna's.

'But we cannot say for sure as the corpse was buried.'

According to local media, who quoted anonymous sources within Wiesbaden Police, Susanna was strangled to death

Prosecutors suspect the man in custody and 20-year-old Iraqi asylum-seeker Ali Basar raped and murdered the girl before burying her.

Both previously lived at homes for asylum-seekers in Wiesbaden.

Basar is last week believed to have fled with his family to Erbil, Iraq, via Istanbul, and was suspected in a string of previous offences, including robbery at knifepoint.

German police are hunting Iraqi asylum-seeker Ali Basar, who is believed to have escaped to Iraq after raping and murdering the 14-year-old

Police officers at the scene of where Susanna Feldman's body was discovered by some rail tracks on the outskirts of Wiesbaden, in west Germany

He is thought to arrived in Germany in October 2015 during the height of a migrant influx to Germany and was appealing the rejection of his asylum application.

The Turkish suspect, who was not previously known to police, was arrested Wednesday evening.

Police said a 13-year-old refugee boy went to a police station in Wiesbaden on Sunday and told officers the girl had been raped and killed.

He named the Iraqi as a possible perpetrator.

A 35-year-old Turkish man remains in police custody. Police are pictured at the scene of the gruesome find, 10 days after the teenager went missing

Susanna's body was found in thick vegetation along the side of a railway line following a 10-day search for the teenager

Previous killings by asylum-seekers in Germany have fanned tensions over the influx of more than a million migrants in 2015 and 2016.

Tensions over migration have helped the right-wing Alternative for Germany enter the German parliament last year.

The surge of migrants also sparked a rash of attacks on asylum-seekers' homes, which has since tapered off.

Two men were convicted on Thursday in the southwestern city of Landau of setting fire to a home being built for asylum-seekers in the nearby town of Herxheim in 2015.

They both received probation.