Gangs caused havoc on Mischief Night with dozens of dozens of crimes reported across the region including attacks on emergency services, damage to cars and homes and fires being set.
Fire crews responding to incidents across Merseyside had fireworks and eggs thrown at them.
Merseyside Fire and Rescue Service responded to 80 separate incidents including 18 different fires involving wheelie bins, rubbish and bonfires, a reduction compared to 2020.
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A spokesperson said: "Between 4pm and 11.30pm on 30th October 2021, crews had dealt with 18 deliberate secondary fires, compared to 20 in 2020.
"Fire Control handled more than 80 emergency 999 calls between 4pm and 11.24pm."
Merseyside Police said they recorded a 52% decrease in anti-social behaviour and criminal damage calls yesterday, compared to last year.
There were a total of 785 emergency calls, representing an 8.9% decrease, and 520 non-emergency calls, a 22.8% decrease.
They said there was a 52% decrease in reports of anti-social behaviour and criminal damage, with 279 such reports being made compared to 576 last year
Incidents including reports of youths throwing fireworks and bricks at vehicles including Merseyside Fire and Rescue Service (MFRS) in the Longmoor Lane area at around 8pm. A 40-year-old man from Orrell Park was detained nearby on suspicion of assaulting a police officer, and was taken into custody for questioning.
A further incident took place in Mill Lane, Toxteth around 8.20pm, in which fireworks were reportedly thrown in the street. Officers attended and took a number of youths home.
In Lyons Road, Moreton, officers attending an incident at around 8pm had fireworks aimed at them, causing minor burns and hearing difficulties. Enquiries are ongoing to locate the offenders. Both officers were thankfully checked over and will make a full recovery.
Chief Inspector Peter Clark said: “The Halloween period is a typically busy time for all emergency services, but it is pleasing to see that last night saw a massive decrease in reports, especially seeing as it has taking place on a half-term weekend with fair weather.
“Nonetheless, every incident matters to us, and we understand the distress, harm and risk that any such behaviour can and does have on residents and businesses in our communities. If you have any information on any matters from last night or today, come forward and we will continue to take action and put our resources in the right places.
“Throwing fireworks and other items towards officers and other emergency services is incredibly reckless and could easily lead to serious or fatal consequences. It also causes significant disruption to us and our partners in the fire and ambulance services carrying out often life-saving work. An attack on emergency services is an attack on your own community.
“We really hope that people enjoy Halloween today, a fun, family event and there is still plenty to do across Merseyside.
Other incidents included a schoolboy who was left with a head injury after having an egg thrown at him on Mischief Night.
Lancashire Police responded to the incident in Skelmersdale on Saturday night, which left the 11-year-old hurt.
It came after the force issued a warning to parents to know where their children were ahead of Halloween.
Posting on the Skelmersdale police Facebook page, a police spokesperson said: "Our staff are just with an 11 year old boy who has a head injury following someone throwing an egg at him.
"This is not mischief, it is a criminal assault and will be dealt with as such."
In Fazakerley, firefighters were attacked by a gang of around 20 yobs while they were putting out wheelie bin fires at around 8.30pm on Satuday, October 30.
Firefighters were called to five wheelie bin fires on Longmoor Lane in Fazakerley and as the crews tried to extinguish the fires, a gang of around 20 yobs threw fireworks at the crews and members of the public.
In Stockbridge Village, another member of the fire service had eggs throw at them while dealing with an incident on Haswell Drive.
Merseyside Fire and Rescue Service said its staff have been physically and verbally attacked five times this week alone.
No one was injured during the incidents but the fire service has slammed those behind the attacks.
Cheshire Constabulary have launched an appeal to find the culprits involved in a suspected arson attack on a bin which spread to Albert Square Shopping Centre, Widnes, on Saturday night (October 30).
Cheshire Fire and Rescue were dispatched at 10.25pm to a shop fire caused by a nearby bin set on fire.
The shop was badly damaged and police suspect youths who were spotted in the area are responsible.
Cheshire police took to Twitter to appeal to parents directly to ask their children where theyhad been.
Kingsway Police tweeted at 10.25pm: "Do you know where your children are?
"Bin fire at the back of Albert Square which has caused substantial damage to nearby retail premises!
"Council CCTV are reviewing footage of suspects! Thank you to #CountyFire"
While emergency services responded to reckless acts of destruction, there were also those keen to show their gratitude.
Officers from Lancashire Police, working in Ormskirk, returned to their car to find a note from a neighbour stuck to their window.
While speaking to people who live in the town a small note was left on the car by someone thanking them for their presence.
The message was written on a piece of paper and said: "I live at number *blank* and I can't tell you how grateful I am for your presence."
Posting a picture of the note to Facebook, officers also outlined what they had been doing through the night,
A spokesperson said: "A couple of our Special Constabulary colleagues saying hello to our mounted officers and a lovely note of thanks from one of our residents.
"Thankfully the majority of people are enjoying the Halloween weekend responsibly."
According to the post, officers only had to deal with one incident of antisocial behaviour.
They added: "We have just had to speak to a small group in Ormskirk town centre about their behaviour but they are now on their way home as I think it was past their bed time."
"Thankfully the majority of people are enjoying the Halloween weekend responsibly."
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