BRUSSELS (AP) -- Belgium's government sought to contain criticism of its handling of the Brussels attacks on Sunday but acknowledged that neglect over decades had caused deficiencies that have hampered an effective response to violent extremism.
Interior Minister Jan Jambon said the government has invested 600 million euros ($670 million) into police and security services over the past two years but said its antiquated justice system and security services were still lagging behind.
Jambon, whose offer to resign on Thursday was declined by the prime minister, said errors were made prior to the March 22 suicide bombing attacks in Brussels that killed at least 31 people and wounded 270 others.
But, speaking on the VRT network, Jambon said hiring anti-terror specialists and specialized equipment does not happen in weeks or months and insisted that new investments need time before they become visible to the public.
As international pressure on Belgium mounted for serving as an unwitting rear-base for extremist fighters who launched the Nov. 13 massacres that left 130 dead in Paris, the government has been forced to defend its choices and the actions of investigators. Lawmakers, meanwhile, are demanding an inquiry.
Belgian police and the army have been deployed, sometimes around the clock, at major buildings and sites in the capital in increasing numbers since November, when Brussels went into lockdown over fears that top Paris suspect Salah Abdeslam had returned and was hiding there.
As it turned out, Abdeslam did return, but police did not find and arrest him until March 18, four days before suspects from his network exploded suicide bombs in Brussels.
Belgian investigators have been slammed for not questioning Abdeslam long enough or hard enough after he was shot in the leg during his arrest. Police have also been criticized for taking too long to get to Zaventem airport on Tuesday morning after two suicide bombers blew themselves up there -- and left an even bigger third suitcase full of explosives.
"There have been errors," Jambon said Sunday, when questioned by VRT television about his offer to resign.
Jambon and Justice Minister Keen Goens were grilled by lawmakers Friday over how authorities failed to arrest suicide bomber Ibrahim El Bakraoui before he blew himself in the packed departure hall at Brussels Airport.
Turkey has said that Bakraoui -- whose brother Khalid was the suicide bomber at the Maelbeek subway station on Tuesday -- was caught near Turkey's border with Syria in 2015 and Ankara had warned Brussels and the Netherlands that he was "a foreign terrorist fighter." Belgian authorities said they did not know he was suspected of terror-related activities until after he was deported to the Netherlands.
Jambon also said the Brussels subway network had been told to shut off services 20 minutes before the attack in the city's Maelbeek subway station -- close to European Union headquarters and the U.S. embassy. He did not fully explain why it was not closed in time, raising more questions about the efficiency of Belgium's security services.
"It serves no purpose looking for polemics, considering the circumstances," Jambon said.
On Sunday, Italian police in the southern city of Salerno said they had arrested an Algerian wanted in Belgium for an alleged false ID crime ring facilitating illegal migration linked to the attacks in Paris.
In the center of Brussels, a "march against fear" planned for Sunday was cancelled after Jambon asked people to stay away since police were too stretched to provide security and were needed for the ongoing investigations into the Brussels attacks.
At the Maelbeek subway station, messages of sadness, solidarity and grief left for victims of the bomb attack there were being collected for storage in the Belgian capital's archives.
The messages were being laid out Sunday on absorbent paper to dry after overnight rain and carefully stacked for transport. Those that can't be taken for safekeeping were being photographed.
"We are trying to collect as many documents we can find and they will be preserved," promised head archivist Frederic Boquet.
Marina Queralt, who often walks with her dog by the Maelbeek station, said the public response to the attacks has been spontaneous and focused on peace.
"Every morning, every afternoon, (the site) was packed with people who wanted just one thing: that people stop killing each other," she said.