WASHINGTON (AP) — The Obama administration and House Democrats said Monday they were undecided about whether to take part in or boycott an election-year investigation by Republicans into the Benghazi attack that killed four Americans.

House Speaker John Boehner announced last week he would create a select committee to examine the response to the deadly Sept. 11, 2012, assault on the U.S. diplomatic post in Libya that killed Ambassador Chris Stevens and three other Americans. Legislative aides said a vote to authorize the panel is expected sometime this week. On Monday, Boehner said Rep. Trey Gowdy, R-S.C., would head the investigation.