Was brain tumor a factor in Pa. shooting rampage?

Pictured: Mark Geisenheyner, the suspect in a mass shooting in Montgomery County who was killed by police in Delaware County on July 4, 2011.

July 13, 2011 9:43:24 AM PDT
Testing is under way to determine if a brain tumor contributed to a Pennsylvania ex-convict's deadly shooting rampage before he was killed by police.

A spokeswoman for the Delaware County medical examiner says the pituitary gland of 51-year-old Mark Geisenheyner was removed during an autopsy and sent for tests.

Spokeswoman Trish Cofiell (COH'-feel) said Wednesday the coroner also is awaiting other medical records on Geisenheyner, which could take weeks.

Geisenheyner was killed in a standoff with police July 4, two days after he shot five people in neighboring Montgomery County, in suburban Philadelphia.

Authorities say Geisenheyner was seeking revenge over an insurance scam when he barged into the vacation home of a New York City couple and opened fire. A 2-year-old Massachusetts boy was among three people killed.