Authorities in Bahrain have detained the daughter of a jailed opposition leader and two other activists seeking to enter a village under a security clampdown following a bombing last week that killed a policeman.

Police took Zainab al-Khawaja and the two others into custody outside Eker, about 20 kilometers (12 miles) south of the capital Manama, where authorities say a homemade explosive was detonated late Thursday. The policeman died the following day.

An Associated Press photographer witnessed the detentions Sunday.

Al-Khawaja's father, Abdulhadi, is among eight opposition figures convicted of anti-state crimes last year and sentenced to life imprisonment. Bahrain's majority Shiites have led an uprising seeking a greater political voice in the Sunni-ruled Gulf kingdom.

Authorities have said seven suspects have been arrested for last week's blast.