HOMESTEAD — Police say two brothers will faces trespassing charges after one of them was grazed by a passing freight train as they crossed some railroad tracks near Pittsburgh.

Homestead police weren't immediately identifying the men Tuesday.

But police tell reporters one of the men was hit in the head by the Norfolk Southern train and taken to a hospital for treatment and was expected to survive. Police say alcohol may have been involved in the incident just before 3:30 p.m. Monday.

The accident halted train traffic in the area, which jammed roads as vehicles could not cross the railroad tracks at several points.

PITTSBURGH — Police have charged a Pittsburgh man they say fatally shot a teenager who was expected to testify for the prosecution at his brother's attempted homicide case.Charles Stevens is jailed without bail on charges of homicide, conspiracy to commit criminal homicide and a weapon violation in the July 17 death of Naytel Pack.The 22-year-old's preliminary hearing is scheduled for Jan. 9.Pack died after being shot multiple times in Nelson Mandela Peace Park in Pittsburgh's Garfield neighborhood.Police say Stevens told another person he walked into the park and fired five shots but wasn't sure how many struck Pack.The 17-year-old was expected to testify at Tarue Johnson's trial in August. Police say he witnessed Johnson shoot 15-year-old Henderson Reese in February.

PITTSBURGH — The Monongahela River is off a list of Pennsylvania rivers impaired by pollution, in part because sewage treatment plants on it are no longer handling natural gas drilling wastewater.The change was included in a report issued Monday by the state Department of Environmental Protection.The reduction in sulfate contamination on the Monongahela also was helped by a drop-off in coal mine runoff and the closure of several coal-fired power plants along it.The Monongahela was first listed as impaired by sulfates for drinking water use in 2010.A stretch of the Susquehanna River wasn't listed, although the Pennsylvania Fish and Boat Commission believes it should be.