Official account of the Middlesex (MA) Sheriff's Office. This account is not monitored 24/7. Please call 911 in an emergency.
Joined September 2011
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While attending Harvard Alumni Day, Sheriff Koutoujian showed Astronaut Jonny Kim a photo we shared featuring Astronaut Christopher L. Williams holding an MSO patch aboard the ISS. The patch was carried into space in honor of the late, retired MSO Captain Mark "Dunnie" Donovan.
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Jun 12
Registration for the 2026 Youth Public Safety Academy will officially close Monday, June 15, at noon. Don't miss out on this incredible program and the chance to win some squishy toys! Visit middlesexsheriff.org to register. #YPSA26 🤸♂️☀️
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Jun 11
Want to be considered for the MSO's 55th BTA? Take the CO entrance exam TODAY, June 11, at 4 p.m. No registration is required. See you later!
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Jun 11
With the World Cup, Sail Boston and events celebrating the nation's 250th birthday upon us, our public safety partners are reminding residents and visitors to be vigilant and stay informed. Remember, If you see something, say something and report it law enforcement immediately!
Jun 8
⚽Public safety is a team sport!
Ahead of @FIFAWorldCup matches and events, #FBI Boston's Special Agent in Charge Ted Docks joined our partners at @bostonpolice, @FoxboroughPD & @MassStatePolice to highlight the importance of remaining vigilant and reporting suspicious activity to law enforcement.
Watch this public service announcement, and remember, you are our eyes and ears. Dial 1-800-CALL-FBI or submit a tip online at tips.fbi.gov. In an emergency, dial 9-1-1.
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Jun 10
The MSO recently received reports from multiple individuals reporting they had lost money in law enforcement impersonation scams. Please remember, the MSO will never threaten arrest over the phone or demand fines be paid using cryptocurrency. Read more at middlesexsheriff.org/m/newsf…
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Jun 8
It's time to sign your cadet up for an unforgettable summer experience! YPSA registration is open now and will close one week from today — Monday, June 15, at 12 p.m. Communities are filling up, so don't delay and register today! #YPSA26
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Jun 8
There are two more opportunities to take the MSO's CO entrance exam coming up this month, June 11 or June 27! No registration is required. We hope to see you there!
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Jun 4
It was a great day to welcome our correctional colleagues from the Norfolk VA Sheriff's Office. They toured and learned about the specialized units and programming we offer at the Middlesex Jail & House of Correction - including a stop at Project EARTH!
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Jun 1
We had a great time at the 28th Annual Law Enforcement Stations Day! Our staff loved answering questions from curious students who hope to one day have a career in law enforcement.
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May 31
REMINDER: Registration for the 2026 Youth Public Safety Academy will officially open Monday, June 1, at 9 a.m. #YPSA26
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May 27
Let the countdown begin! Registration for the MSO's Youth Public Safety Academy will officially open Monday, June 1, at 9 a.m. This year, the MSO is utilizing a new online system designed to streamline registration. Set your alarm, spots go quick! #YPSA26
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May 25
On this Memorial Day we pay tribute to those members of the US Armed Forces who made the ultimate sacrifice defending our nation. May their courage, determination and memory never be forgotten.
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May 24
ICYMI: MSO Deputy Matthew Doherty was recently recognized at the 29th Annual Excellence in Corrections Awards. Read more about Dep. Doherty and all the award recipients at mass.gov/news/healey-driscol…
#WeAreTheMSO
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May 22
This afternoon we were proud to welcome 18 new correction officers to our team. Congrats to the members of #54thBTA!
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May 22
This week we collaborated with our Shirley PD partners to talk scam awareness and prevention with local residents at the Shirley Senior Center. Thanks to Chief Santiago and the Council on Aging for facilitating a great event.
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May 20
Last week Victim Services Coordinator Ashley Griffith was the guest speaker at a violence prevention month event hosted by Portal to Hope and the Everett Police Department. Ashley joined others at Everett City Hall to talk about her important work and MSO programs.
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May 20
Today Deputy Matthew Doherty was presented with the Medal of Valor at the 29th Annual Excellence in Corrections Awards. Deputy Doherty was honored for his heroic actions in disregarding his own personal safety to rescue a man from a house fire while off-duty at home. #WeAreTheMSO
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May 17
It's not every day that your office's patch goes to space. Recently, Astronaut Christopher L. Williams carried an MSO patch aboard the International Space Station (ISS) in honor of late retired MSO Captain - and legendary Shawsheen Tech wrestling coach - Mark "Dunnie" Donovan.
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May 15
This week, #54thBTA recruits experienced a challenging but important rite of passage in law enforcement training... OC exposure. This exercise prepares recruits to stay calm and focused while working through discomfort and stress. Only one week until graduation for these recruits
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