INDIANAPOLIS (AP) — An Indianapolis power company says it is inspecting all downtown manholes and underground electrical vaults and installing more locking manhole covers ahead of next week’s men’s Final Four.

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Indianapolis Power & Light Co. said Thursday it has enlisted 50 technicians from Ohio and Illinois to help inspect about 1,300 manholes and vaults in the utility’s downtown underground network.

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IPL also is installing 16 additional locking manhole covers in high-traffic areas near Final Four activities. Thecovers are designed to pop up only a few inches in cases of extreme pressure in manholes.

The moves come a week after underground explosions caused by electrical arcing shot manhole covers into the air at a busy downtown Indianapolis intersection. The incident cut power to hundreds, but no one was injured.

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