(CNN) -- One Goh, the 43-year-old Korean-American man suspected in the execution-style shooting deaths at a small Christian college in California, seemed a doting son visiting his parents in senior housing. But at the same time, he was capable of displaying unbridled anger at the school, according to police and others who had contact with him. The portrait of Goh emerging one day after six women and one man were shot to death at Oikos University in Oakland is of someone who felt he was "teased" and "picked on" at the college, which eventually expelled him, possibly for poor behavior, police said.
@highlight
One Goh visited his parents in senior housing
@highlight
But he was angry about Oikos University expelling him, police say
@highlight
Goh felt students and others teased him for his limited English speaking skills
@highlight
Korean-American leaders in Oakland consider a strategy to address the tragedy
The early, broad impressions of Goh have drawn the attention of civic and church leaders in the city's @placeholder community, who were scheduled to attend a memorial service in Oakland Tuesday evening.