The husband of the driver who caused a crash that killed herself and seven others on the Taconic State Parkway last month met with State Police on Friday to answer additional questions, according to authorities and a private investigator hired by the Schuler family.

"They were asking the timeline of his arrival and his departure - same as Diane. No new areas were covered," said private investigator Thomas Ruskin, who accompanied Daniel Schuler to the hourlong meeting.

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Authorities say Diane Schuler was drunk and high when she drove the wrong way down the Taconic State Parkway and crashed head-on into a sport utility vehicle, killing herself and seven others. Her family has suggested medical problems led her to drive the wrong way.

State Police said Schuler told investigators that his wife drank socially and occasionally smoked pot. Schuler, who works as a public safety officer for the Nassau County police, was not obligated to report his wife's marijuana use to the authorities because he's a civilian employee, said Det. Lt. Kevin Smith, a police spokesman.

At the meeting, Ruskin turned over to state investigators video surveillance from a Sunoco gas station in upstate Liberty and an interview with a station employee. The employee, according to Ruskin, said Diane Schuler bought gas and tried to buy Advil or Tylenol gel caps. "He said that she appeared to him to be totally coherent, not under the influence of any drugs and totally responsive," said Ruskin.