Colin Dwyer

Updated at 10:55 p.m. ET

A "domestic situation" might lie behind the massacre that unfolded at a small South Texas church during Sunday services, authorities say. At a news conference Monday, law enforcement officials explained that the gunman — identified by police as 26-year-old Devin Patrick Kelley — had sent threatening text messages to his mother-in-law, who is has attended the First Baptist Church in Sutherland Springs, Texas.

Currently, officials say they do not believe the attack was racially or religiously motivated.

Updated Monday at 5:10 a.m. ET

Federal authorities are investigating a shooting at the First Baptist Church in Sutherland Springs, Texas, a small community southeast of San Antonio.

In a news conference Sunday night, an official from the Texas Department of Public Safety described the scene: Around 11:20 a.m., a man dressed in black tactical gear approached the church and began firing an assault rifle. He then entered the church and continued firing.

Months after Mosul was reclaimed from the Islamic State, the brutal acts committed during the militant group's reign over the major Iraqi city are still coming into focus. That picture grew clearer Thursday, as two U.N. human rights agencies released a report on atrocities committed during ISIS' final months in power.

British Defense Minister Michael Fallon has announced he is stepping down from his post, citing allegations "about my previous misconduct." Fallon, one of the most visible politicians in Prime Minister Theresa May's government, declared his intent to resign in a statement released Wednesday.

"Many of these [allegations] have been false but I accept that in the past I have fallen below the high standards that we require of the Armed Forces that I have the honour to represent," Fallon said.

Updated at 4:52 p.m. ET

The U.S. Navy has completed its investigations into the deadly collisions that damaged two of its warships just months apart this summer, describing what went wrong in a report published Wednesday. The report is dozens of pages long, but if those errors could be described in a word, it would be "avoidable."

Updated at 11:15 p.m. ET

At least eight people were killed and "more than a dozen" were injured Tuesday afternoon after a motorist drove onto a busy pedestrian and bicycle path in Manhattan. Police have arrested a 29-year-old man identified by law enforcement officials as Sayfullo Saipov. Authorities have said there are "no others outstanding" in the incident, which unfolded near the World Trade Center.

Updated at 2:37 p.m. ET

Ousted Catalan leader Carles Puigdemont says he and several of his fellow politicians might have fled Spain for Belgium, but they have no intention of seeking political asylum there.

Just over a month since Iraq's Kurdish north voted to declare independence, setting in motion a disastrous series of events for the region, Kurdish President Masoud Barzani has told local lawmakers he intends to step down.

On the same day President Trump declared the opioid epidemic a public health emergency, the co-founder of a prominent opioid medication manufacturer has been arrested on fraud and racketeering charges. John Kapoor, former CEO of Insys Therapeutics, has been charged with conspiring to push the company's signature drug for unacceptable uses through a series of bribes and kickbacks.

Less than 12 hours after sexual harassment allegations surfaced against Mark Halperin, the veteran political journalist has been put on leave by MSNBC, where he had been serving as a contributor. In a statement released Thursday morning, the news network said it finds the allegations first reported by CNN "very troubling."

"Mark Halperin is leaving his role as a contributor until the questions around his past conduct are fully understood," the network said.

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