Officials stepped up security at both synagogues and mosques Saturday as authorities investigated a shooting at a Jewish organization that killed an employee and wounded five others, including a pregnant woman.

Police arrested Naveed Afzal Haq, 30, after the shooting Friday afternoon and he was booked for investigation of homicide and attempted homicide, police said. They were investigating the shooting as a hate crime.

Haq was expected to make an initial court appearance Saturday afternoon.

The gunman forced his way through the security door at the federation after an employee had punched in her security code, Marla Meislin-Dietrich, a database coordinator for the center who was not at the building at the time, told The Associated Press.

"He said `I am a Muslim American, angry at Israel,' before opening fire on everyone," Meislin-Dietrich said. "He was randomly shooting at everyone."

Police would not confirm the account.

Pam Waechter, 58, an assistant director at the federation, died at the scene, said Nancy Geiger, the Jewish Federation of Greater Seattle's interim chief executive.

"This is just an extraordinary shock. We lost a really wonderful colleague, a wonderful friend. It's hard," Geiger said.

As employees fled the center, a SWAT team raced to the scene and blocked off several downtown blocks. The gunman surrendered moments later after speaking with a 911 dispatcher. That conversation led police to believe the shooting was a hate crime, authorities said.

Mayor Greg Nickels and Police Chief Gil Kerlikowske said officers were moving to protect synagogues and mosques around the city, but said there was no evidence of a broad conspiracy.

"This was a purposeful, hateful act, as far as we know by an individual acting on his own," Nickels said.

Authorities have been advising synagogues and Jewish groups to be watchful in the weeks since hostilities erupted between Israel and Lebanon. Assistant Police Chief Nick Metz said the warning was not in response to any specific threats.

Kerlikowske said police were protecting mosques "because there's always the concern of retaliatory crime."

When asked if the suspect was Muslim, Kerlikowske said at a news conference, "you could infer that that was his background." Laura Laughlin, special agent in charge of the Seattle FBI office, said Haq was a U.S. citizen.

Haq's lawyer, Larry Stephenson, told The Seattle Times that he thought Haq was single and unemployed, and that Haq had a misdemeanor lewd conduct charge pending in Benton County. Haq had been accused of exposing himself in a public place, Stephenson told The Times.

Haq's parents were shaken by his arrest in the shootings, the lawyer said.

"I talked to his father, and his mother is crying, and they don't know what is going on," Stephenson said. "They are very, very shook up."

Five women remained hospitalized at Harborview Medical Center on Saturday, Kerlikowske said. Three had been shot in the abdomen and were upgraded from critical to serious condition Saturday morning, hospital spokeswoman Susan Gregg-Hanson said.

Two others were in satisfactory condition: a 37-year-old woman who is five months pregnant and had been shot in the forearm, and another woman who was shot in the knee.