India, April 26 -- Bangladesh Police issued a nationwide security alert over possible militant attacks on key installations, including the parliament complex, officials and media reports said on Saturday.

"The alert has been issued based on intelligence reports," a police headquarters (PHQ) official said, requesting anonymity.

The official described the alert as "urgent and confidential". A PHQ letter warned of possible coordinated attacks targeting the parliament complex, places of worship, entertainment facilities, and military and police installations, with armouries seen as potential targets, Bengali daily Prothom Alo reported.

The Daily Star and other newspapers said the alert was issued after the recent arrest of a banned militan...