Service had been interrupted at around 11 a.m. between Cais do Sodré and Martim Moniz stations.

The Lisbon Metro operates four lines daily: Yellow (Rato-Odivelas), Green (Telheiras-Cais do Sodré), Blue (Reboleira-Santa Apolónia), and Red (Airport-São Sebastião).

The metro normally operates between 6:30 a.m. and 1:00 a.m.