Police officer remove a climate protestor from Lambeth bridge in central London Monday, Oct. 7, 2019. Environmentalist blocked roads leading to Britain's Parliament in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)

LONDON (AP) — London Police say they've arrested 21 climate change activists over the past few days as the Extinction Rebellion group attempts to draw attention to global warming.

The capital's Metropolitan Police say the arrests on suspicion of conspiracy to cause a public nuisance took place Saturday and Sunday.

The arrests come as protesters in Berlin and Amsterdam blocked roads ahead of what is being described as widespread demonstrations. Further protests are taking place Monday in London.

The group's protesters have succeeded before in disrupting life in London in hopes of gaining attention to their cause.

In April, members of the group blocked several London roads and bridges during 10 days of action designed to alert the public and politicians to the "climate emergency."

Extinction Rebellion wants to achieve net zero carbon emissions by 2025.

Police officer remove a climate protestor from Lambeth bridge in central London Monday, Oct. 7, 2019. Environmentalist blocked roads leading to Britain's Parliament in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Police officer remove a climate protestor from Lambeth bridge in central London Monday, Oct. 7, 2019. Environmentalist blocked roads leading to Britain's Parliament in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Climate protestors block the Mall leading to Buckingham Palace, rear, central London Monday, Oct. 7, 2019. (AP Photo/Alastair Grant)
Police guard climate protestors who attached themselves to a tripod on Westminster Bridge, leading to Britain's Parliament in central London Monday, Oct. 7, 2019, in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Mark Rylance, center, a British actor who won an Oscar for Best Supporting Actor, takes part in a climate demonstration in central London Monday, Oct. 7, 2019. Activists with the Extinction Rebellion movement blocked major roads in London, Berlin and Amsterdam on Monday at the beginning of what was billed as a wide-ranging series of protests demanding new climate policies. (AP Photo/Alastair Grant)
Climate protestors block a road leading to Britain's Parliament in central London Monday, Oct. 7, 2019, in an attempt to disrupt the heart of government. (AP Photo/Alastair Grant)
Climate protestors block The Mall in central London Monday, Oct. 7, 2019. Activists with the Extinction Rebellion movement blocked major roads in London, Berlin and Amsterdam on Monday at the beginning of what was billed as a wide-ranging series of protests demanding new climate policies. (AP Photo/Alastair Grant)
Climate protestors block The Mall in central London Monday, Oct. 7, 2019. Activists with the Extinction Rebellion movement blocked major roads in London, Berlin and Amsterdam on Monday at the beginning of what was billed as a wide-ranging series of protests demanding new climate policies. (AP Photo/Alastair Grant)
Climate protestors block the Mall leading to Buckingham Palace, rear, central London Monday, Oct. 7, 2019. (AP Photo/Alastair Grant)
Climate protestors take part in a protest near Britain's Parliament in central London Monday, Oct. 7, 2019. (AP Photo/Alastair Grant)
Climate protestors block Lambeth bridge leading to Britain's Parliament in central London Monday, Oct. 7, 2019, in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Climate protestors block a road leading to Britain's Parliament in central London Monday, Oct. 7, 2019, in an attempt to disrupt the heart of government. (AP Photo/Alastair Grant)
Environmental protestors face police on Lambeth bridge in central London Monday, Oct. 7, 2019. Environmental activists were set to block roads leading to Britain's Parliament, rear, in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Climate protestors block Lambeth bridge, leading to Britain's Parliament in central London Monday, Oct. 7, 2019, in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Police officers listen to instructions on a bridge leading to Britain's Parliament, rear, in central London Monday, Oct. 7, 2019, where environmental protestors tried to block roads in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Police officers take positions on a bridge leading to Britain's Parliament, rear, in central London Monday, Oct. 7, 2019, where environmental protestors tried to block roads in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Police officers talk to climate protesters on Lambeth bridge in central London Monday, Oct. 7, 2019. Environmental activists were set to block roads leading to Britain's Parliament in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Climate protestors block a road leading to Britain's Parliament in central London Monday, Oct. 7, 2019, in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Climate protestors block a road leading to Britain's Parliament in central London Monday, Oct. 7, 2019, in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Environmental protestors gather around the head of a statue confiscated by police on Lambeth bridge in central London Monday, Oct. 7, 2019. Environmental activists were set to block roads leading to Britain's Parliament in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Environmental protestors face police on Lambeth bridge in central London Monday, Oct. 7, 2019. Environmental activists were set to block roads leading to Britain's Parliament in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Climate protestors lift the head of a statue on Lambeth bridge in central London Monday, Oct. 7, 2019. Environmental activists were set to block roads leading to Britain's Parliament in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
A climate protestor sits next to parts of a statue which were confiscated by the police in central London Monday, Oct. 7, 2019. Environmental activists were set to block roads leading to Britain's Parliament in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)
Police carry a statue taken from climate protestors on a bridge in central London Monday, Oct. 7, 2019. Environmental activists were set to block roads leading to Britain's Parliament in an attempt to disrupt the heart of government. (AP Photo/Matt Dunham)