The 26-year-old crossed the line in 3min 57.45sec at the Karlsruhe Exhibition Center.

It was 2.28 seconds slower than her world record time of 3:55.17, which she set at the same meet in 2014.

Home favourite Konstanze Klosterhalfen finished second in 4:04.00, while Kenya's Beatrice Chepkoech came third in 4:08.33.

There was also a world-leading time set in the men's 3,000m as Ethiopia's Hagos Gebrhiwet secured top honours in 7.37.91.

Compatriot Yomif Kejelcha finished a strong second in a personal best 7:38.67, while Morocco's Abdalaati Iguider came third in 7:39.92.

Among today's other winners was Poland's Marcin Lewandowski, who won the men's 800m in a time of 1:46.90.

The United States' Erik Sowinski was an extremely close second in 1:46.91, while Spain's Saúl Ordóñez came third in 1:46.96.

In the women's 400m, Switzerland's Léa Sprunger took the win in 52.03.

Slovenia's Anita Horvat was the runner-up in 52.58, while Ireland's Phil Healy finished third in 52.67.

China's Bingtian Su and Germany's Tatjana Pinto won the respective men's and women's 60m events.

Su triumphed in an Asian record time of 6.47, beating nearest challenger Everton Clarke of Jamaica by 0.07 seconds.

Cuba's Yunier Pérez registered the same time as Clarke in finishing third.

Pinto, meanwhile, led a German one-two in the women's 60m, posting a time of 7.10 to beat Lisa Mayer by 0.02 seconds.

Great Britain's Asha Philip rounded out the podium in the same time as Mayer.

The women's 60m hurdles saw American Sharika Nelvis triumph in 7.80.

Compatriot Christina Manning was the runner-up in 7.81, while Germany's Cindy Roleder was the third-place finisher in 7.84.

Out in the field, Germany's Raphael Marcel Holzdeppe achieved a world-leading mark of 5.88m to win the men's pole vault.

France’s Renaud Lavillenie finished second with 5.83m, while Poland's Pawel Wojciechowski came third with 5.70m.

In the men's long jump, Cuba's Juan Miguel Echevarría prevailed with a mark of 7.97m.

Germany's Julian Howard was the runner-up with 7.78m, while Uruguay's Emiliano Lasa finished third with 7.66m.

The women's high jump was won by Bulgaria's Mirela Demireva with a mark of 1.95m.

Ukrainians Yuliya Levchenko and Kateryna Tabashnyk shared second place with 1.92m.

Birthday girl Malaika Mihambo secured home success in the women's long jump with a world-leading mark of 6.72m.

Fellow German Sosthene Moguenara-Taroum finished second with 6.70m, while Serbia’s Ivana Spanović completed the top three with 6.61m.

Other IAAF World Indoor Tour legs are scheduled for Düsseldorf, Madrid, Boston and Toruń before the series' conclusion in Glasgow on February 25.

It is building up to the IAAF World Indoor Championships in Birmingham.