Arrest

Florida's Jenkins arrested on marijuana charge
http://nbcsports.msnbc.com/id/41237858/ns/sports-college_football/
-The AP's Mark Long is clearly versed in the correct usage of arrest. The word charge even made it into the headline. He uses the word multiple times, all are correct, but the first is "Jenkins was arrested on a marijuana charge..."

Ex-boyfriend of Tacoma women arrested in her death
http://www.seattlepi.com/local/6420ap_tacoma_stabbing_death.html
-This article seems like it was rushed to get online. It's only a few inches at the time I'm linking it. And, while there isn't a distinct violation of the usage of arrest, there is no charge mentioned in the article and the word arrest is used.  It's assumed someone would be charged before arrested, but the writer does not make that distinction here so it's up to interpretation.

Orioles pitcher Troy Patton arrested and charged with DWI
http://hardballtalk.nbcsports.com/2011/01/24/orioles-pitcher-troy-patton-arrested-and-charged-with-dwi/
-NBC Sports gets it right again. The writer says Patton was arrested and charged with a DWI in the lede, making it clear from the beginning.

2 arrested in deaths of 31 animals in Granite Falls
http://www.heraldnet.com/article/20110124/NEWS01/701249849
-The writer indicates that two people have been arrested but makes no mention anywhere in the article about a charge.  In fact, the writer only says they've been arrested for investigation of animal cruelty. This is extremely vague and borders the line of acceptable. I would not have let it run this way.

Man arrested for assault at Brighton high school
http://www.denverpost.com/news/ci_17186255
-The headline has it wrong. While he was charged with assault, you shouldn't use just arrested in the headline. "Arrested and charged with assault..." would have been much better.