Police are appealing for witnesses after jewellery was stolen in a raid at a Cardiff city centre department store.
Road closures in Cardiff city centre will be in effect during both semi-finals.
His friends last saw him in Cardiff city centre at around 18:30 GMT.
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Ben Thompson, 34, from Haverfordwest, Pembrokeshire, was last seen by friends in Cardiff city centre at about 18:30 GMT on Saturday.
The four were questioned, along with team-mates Lee Byrne and Mike Phillips, by team managers about what they were doing in Cardiff city centre on Sunday.
Wales team manager Alan Phillips said he and head coach Warren Gatland had questioned the six players about "their presence in Cardiff city centre on the evening of Sunday, 15 February".
In another major development for the city, the British property company MEPC Plc announced it had formed a joint venture with Norwest Holst to construct and maintain a new square and road linking Cardiff city centre and Cardiff Bay waterfront.
In Wales, they tend to work out of normal offices and their homes - the honorary consul for Italy is based on a residential street in Canton, Cardiff, for instance, while the Swedish honorary consul is based in a legal firm's office in Cardiff city centre.
Mr Scadding hopes the parade will provoke similar support among Newport residents as Sunday's Cardiff City parade did in the capital, when the Bluebirds toured in open-top buses from the city centre to Cardiff Bay to celebrate their promotion to the Premier League.
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Mr Griffith worked at Cardiff Arts Institute in the city centre and had a four-year-old daughter.
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Meanwhile, strike action by Post Office workers is due to see a city centre office in Cardiff close early on Christmas Eve.
Around 1, 800 staff in three different offices in Cardiff will eventually be relocated at the city centre site of an old carpark near the St David's shopping centre.
Cardiff council leader Rodney Berman said designating the city centre as a financial services enterprise zone would help it compete with English cities and regions.
Mr Hubbard said Cardiff was an ideal place for the service with many people commuting into the city centre by car.
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