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This Dec. 10, 2012 photo shows Weymouth Police Officer Michael C. Chesna in Weymouth, Mass. Chesna died Sunday, July 15, 2018, from wounds sustained when a suspect allegedly took the officer’s gun and fired following a vehicle crash and a foot chase. (Gary Higgins/The Quincy Patriot Ledger via AP)

Weymouth police officer, bystander die from gunshot wounds

Sen. Elizabeth Warren, D-Mass., waves as she arrives at Belkin Family Lookout Farm before a town hall event, Sunday, July 8, 2018, in Natick, Mass. Warren is hosting the town hall and cookout following an Independence Day trip to visit U.S. troops in Iraq and Kuwait. (AP Photo/Steven Senne)

Elizabeth Warren is preparing for 2020. She's not the only one.

Mother stabbed, killed outside Maine laundromat in front of her 2 young children

Lowell, Massachusetts - 4/29/2018 - Candidate Barbara L'Italien participates in a debate between the Democratic candidates for the third district congressional seat in Lowell, Massachusetts, April 29, 2018.
(Keith Bedford/Globe Staff)

A national women's group is endorsing in the 3rd District race July 16, 2018 | 11:21 AM

This 2017 photo provided by the Bucks County District Attorney's Office in Doylestown, Pa., shows Samantha Jones. Prosecutors say The Pennsylvania mother killed her 11-week-old son with a lethal mix of drugs in her breastmilk. (Bucks County District Attorney's Office via AP)

Mother accused of killing baby with drug-laced breast milk July 16, 2018 | 11:00 AM

Juvenile killed in Rhode Island dirt bike crash July 16, 2018 | 10:54 AM

US retail sales rise at a healthy 0.5 percent pace in June July 16, 2018 | 8:56 AM

US firm tried to enlist ambassadors to help Russian company July 16, 2018 | 12:28 AM

AP FACT CHECK: Trump's Europe trip marked by inaccuracies July 16, 2018 | 12:16 AM

Victim in critical condition after altercation at Boston party July 15, 2018 | 7:28 PM

Police identify 32-year-old woman who apparently drowned in New Hampshire July 15, 2018 | 7:07 PM

Eighth animal dies after jaguar escapes Audubon Zoo habitat July 15, 2018 | 5:51 PM

Hiker gets lost, ends up in drainage system, found safe July 15, 2018 | 3:06 PM

eastham map

Mass. firefighter hospitalized from heat exhaustion in house fire July 15, 2018 | 1:12 PM

state house

Massachusetts debates 25-year-old education funding formula July 15, 2018 | 1:04 PM

The Spray Pool at Boston Common.

State pool hours extended for 'Summer Nights Initiative' July 15, 2018 | 12:17 PM

Authorities say Dorchester attic fire is under investigation July 15, 2018 | 11:24 AM

Jamie Bassett, a crabber from Chatham, Mass., gives presentation on culinary uses for the green crabs, at a conference, Wednesday, June 6, 2018, in Portland, Maine. Food scientists have gathered to find a way to monetize invasive green crabs, which are a major pest in shellfish harvesting communities.

New wave of invasive pest is something to get crabby about July 15, 2018 | 11:24 AM

Maine rapper buys every seat in house, takes strangers to movies July 15, 2018 | 11:02 AM

Area residents attend a memorial dedication, where five women were hanged as witches 325 years ago at Proctor's Ledge.

City of Salem promises to spruce up witch trials memorial July 15, 2018 | 10:47 AM

Man shot in head during vehicle shooting in Worcester July 15, 2018 | 10:44 AM

Weymouth shaken after officer, bystander both shot and killed July 15, 2018 | 9:58 AM

The University of Maine is

UMaine professor cleared in sexual harassment cases July 15, 2018 | 9:41 AM

C'est la vie: Canadians still visiting US despite trade flap July 15, 2018 | 9:30 AM

state house

Lots to do and little time left for Mass. lawmakers July 15, 2018 | 9:20 AM

Garrett Matthias at the University of Iowa Stead Family Children’s Hospital in Iowa City. He died on July 6 of a rare cancer.

‘See ya later, suckas!’: The obituary of a 5-year-old boy in his own words July 15, 2018 | 8:00 AM

Again, thumbtacks found in a Newton bike lane July 14, 2018 | 8:19 PM

In this Aug. 26, 2013 file photo, a fire truck drives past burning trees as firefighters continue to battle the Rim Fire near Yosemite National Park, Calif. The California Department of Forestry and Fire Protection says a firefighter has been killed while battling a wildfire near Yosemite National Park. Officials say Heavy Fire Equipment Operator Braden Varney was killed Saturday morning while battling the Ferguson Fire. The fire broke out around 10:30 p.m. Friday night in Mariposa County, near the west end of Yosemite National Park and the Sierra National Forest.

Firefighter killed in wildfire near Yosemite National Park July 14, 2018 | 7:59 PM

A seagull glides over the roof of Cape Pond Ice in Gloucester. Residents in Gloucester are becoming frustrated with their growing numbers.

Seagull in Gloucester snatches wallet from man on the street July 14, 2018 | 6:15 PM

Shooting victim found with crack in hospital in Worcester July 14, 2018 | 4:48 PM

Toddlers dangling from second-floor ledge in Chicago make it to safety July 14, 2018 | 4:39 PM

Police arrest break-in suspect after foot chase in Canton July 14, 2018 | 4:00 PM

Charges undermine Assange denials about hacked email origins July 14, 2018 | 3:38 PM