The Schaerbeek area of Brussels was reportedly on lockdown for a period this evening as police carried out a security operation.

One person was arrested during the operation, La Dernière Heure reports.

The Brussels prosecutor's office will hold a press briefing on the operation Tuesday at 11 am. It said earlier that no more information on the operation would be given tonight.

Several deployments took place in the vicinity of Liedts Square, according to Brussels Nord police, as reported by 7Sur7.

Lock down in our part of #Brussels . Police sent me back in. Lots of sirens out there. pic.twitter.com/4PjjwC3rIS — Jessica J.J. Lutz (@JessicaJJLutz) 19 December 2016

Perquisition toujours en cours à #Schaerbeek au 2eme étage. Périmètre restreint depuis 30min. #terrorisme ?Rep demain pic.twitter.com/D2YO9czTX7 — Quentin Warlop (@quentinwarlop) December 19, 2016

Grosse perqui place Liedts à #Schaerbeek. Place bouclée, plusieurs périmètres de sécurité, bcp de policiers. Services de deminage en route. — Noé Boever (@NoeBoever) 19 December 2016

De grandes perquisitions ont lieu pour le moment à Schaerbeek. #Bruxelles — Thierry_PELTIER (@Thierry_PELTIER) December 19, 2016

A number of streets had been sealed off and people were escorted back to their homes by police, according to RTL Info. These streets have now been reopened after police lifted a large security perimeter just before 8 pm.

Five tram lines halted services for some time at the order of police. All have now resumed operations, according to Brussels transport operator STIB - MIVB.

It’s been speculated that the operation is related to a terrorism investigation. Political journalist Thomas Gadisseux tweeted that significant resources have been deployed as part of an anti-terrorist operation which has been ongoing since the start of the day.

Opération PJ Terrorisme en cours à Schaerbeek, près de la place Lidts. Gros moyens déployés depuis le début de la journée — Thomas Gadisseux (@tgadisseux) December 19, 2016

Plusieurs opérations policières en cours place Liedts à #Schaerbeek en Belgique à 5 kilomètres de Molenbeek — Etienne Jacob (@JacobEtienne) December 19, 2016

Plusieurs opérations policières place Liedts à Schaerbeek https://t.co/J9XTj7CPGqpic.twitter.com/kQKB3ErruY — MichelBOfficiel (@MichelBOfficiel) December 19, 2016

BRUXELLES : Plusieurs rues de Schaerbeek ont été bouclées par la police, des opérations sont en cours près de la place Liedts (@rtlinfo). pic.twitter.com/MrUXAIN1zS — Infos Françaises (@InfosFrancaises) December 19, 2016

In October two Belgian police officers were attacked in Schaerbeek by a knife-wielding man in an incident classified as a suspected terrorist act, according to the Belgian federal prosecutor’s office.

READ MORE: Two policemen stabbed in suspected terror attack in Brussels – prosecutors

Schaerbeek is 5km from the mainly-Muslim area of Molenbeek where the Abdeslam brothers, Salah and Brahim, who were behind the Paris terrorist attacks, lived.

The area has been under intense police scrutiny since the November 2015 attacks and has been subject to several anti-terrorist police raids.